What Causes Lower Left Abdominal Pain When Ejaculating?

Pain during ejaculation is more common than most men assume, affecting up to about 1 in 10 men.1PubMed. Painful ejaculation The cause is usually in the structures that squeeze during ejaculation (the prostate, nearby glands and pelvic muscles) or in the groin itself. When the pain sits on one side, like the lower left, it often hints that the trouble is on that side rather than a whole-body issue.2PubMed. Diagnosis of chronic abacterial prostato-vesiculitis by rectal ultrasonography in relation to symptoms and findings

The Most Common Cause Is Prostate and Pelvic Inflammation

Painful ejaculation is usually felt in the penis but can show up in the testicles, rectum or lower abdomen.3PubMed Central. Painful Ejaculation – An Ignored Symptom It is most often tied to prostatitis, meaning prostate inflammation, and to chronic pelvic pain syndrome, which is long-lasting pelvic pain without a clear infection.4PubMed. Painful ejaculation An enlarged prostate and a blocked ejaculatory duct, the tube that carries semen into the urethra, can cause it too.5PubMed. Painful ejaculation The prostate contracts hard to push semen out, so an inflamed gland hurts when it squeezes.

The standard prostatitis symptom questionnaire asks about it directly, along with pain in the testicles, between the scrotum and anus, and in the bladder area.6PubMed Central. Chronic prostatitis: Current concepts Men with long-lasting pelvic pain whose ejaculation keeps hurting tend to have more severe symptoms and are less likely to improve on their own.7PubMed. Impact of post-ejaculatory pain in men with category III chronic prostatitis/chronic pelvic pain syndrome

Prostate trouble rarely stops at ejaculation. Burning or stinging when you urinate often comes along with it, as does needing to go often or urgently, including at night. Many men also feel a dull ache between the scrotum and anus or low in the belly. Bacterial prostate inflammation can come on fast with fever and chills, while the long-lasting kind builds slowly.

Only a minority of cases are caused by bacteria and treated with antibiotics. Most long-lasting cases have no infection found on tests, which is why antibiotics alone sometimes don’t help. A sexually transmitted infection can also inflame the urethra and nearby glands, so it should be ruled out if you have a new partner.

The pain can show up during ejaculation or start minutes to hours afterward. Symptoms tend to come and go, so many men assume it has cleared up and then it returns.

Tight Pelvic Floor Muscles Can Mimic Prostate Pain

The pelvic floor is the sling of muscles at the base of the pelvis, and it contracts rhythmically during ejaculation. Overactive pelvic floor muscles can spasm or stay clenched, causing pain during arousal, erection or ejaculation.8Pelvic Rehabilitation Medicine. Pain After Ejaculation or During Sex? It Might Be Your Pelvic Floor Tight spots in them can send pain to the testicles, bladder area or penis, which mimics prostate inflammation.9Pelvic Rehabilitation Medicine. Pain After Ejaculation or During Sex? It Might Be Your Pelvic Floor Muscle pain and organ pain in the pelvis share nerve pathways in the spinal cord, so it can be impossible to tell by feel which one is hurting.10Sexual Medicine Reviews. The Role of Pelvic Floor Muscles in Male Sexual Dysfunction and Pelvic Pain

A muscular cause tends to have a recognizable feel: a cramp or clench that lasts minutes to hours after orgasm. It is often worse after long sitting, heavy lifting, or holding in urine. Urine and semen tests come back normal, and the pain may rise and fall with stress levels. Psychological stress plays a key role in starting and prolonging long-lasting pelvic pain, by changing muscle tension and how pain is felt.11Mansoura Medical Journal. The Association between Stress-related disorders and Chronic Pelvic Pain Syndrome in males: A Narrative Review

The pelvic floor muscles run on both sides, and tightness can be stronger on one, so the cramp may be felt mostly on the left. Tension there can refer pain to the lower abdomen, inner thigh or groin, which is why a muscle problem can feel like it is in an organ.

Kegels are not the answer here. When the muscles are already too tight, squeezing harder can worsen the pain. The goal is learning to relax them, and a pelvic floor physical therapist can teach that.

Why the Pain Might Be Only on the Left Side

Glands and ducts come in pairs, so trouble can be on one side. The seminal vesicles, which add fluid to semen, and the ejaculatory ducts sit one on each side behind the bladder. In men with an inflamed prostate and seminal glands, pain on one side usually matched changes in the gland on that same side.12PubMed. Diagnosis of chronic abacterial prostato-vesiculitis by rectal ultrasonography in relation to symptoms and findings Most of those men also had signs of past inflammation of the coiled tube behind the testicle.13PubMed. Diagnosis of chronic abacterial prostato-vesiculitis by rectal ultrasonography in relation to symptoms and findings Small stones in a seminal vesicle can cause painful ejaculation and sometimes blood in the semen.14PubMed. Diagnosis and management of symptomatic seminal vesicle calculi

Groin problems on the left can hurt during sex too. About 1 in 4 men with a groin hernia had pain during sexual activity, mostly in the groin and scrotum.15PubMed. Pain during sexual activity before and after laparoscopic inguinal hernia repair Infection can damage the spermatic cord, which carries blood vessels and nerves to the testicle.16Mayo Clinic. Post-vasectomy pain syndrome: Symptoms and causes In one reported case, enlarged pelvic veins pressed on nerves near the prostate when it contracted during ejaculation.17PubMed Central. Painful ejaculation in a patient with pelvic venous insufficiency

To check for a hernia, look for a bulge in the groin that appears when you cough or strain and may disappear when you lie down. A dragging or heavy feeling in the groin goes with it. A doctor confirms it with a quick exam.

Where exactly you feel it gives clues, though they aren’t definitive. Low belly pain just above the pubic bone points toward the bladder and prostate area. Pain in the crease of the groin points toward a hernia or the cord. Pain spreading into the left testicle can come from the cord, epididymis or veins.

The left testicular vein drains in a way that makes enlarged veins in the scrotum, called a varicocele, more common on the left. A varicocele often feels like a dull heaviness in the scrotum that worsens after long periods of standing and eases when lying down. Doctors can check for it during an exam, sometimes with the man standing, and an ultrasound can confirm it.

Nerve Irritation and Past Surgery

The pudendal nerve carries feeling from the genitals and the area between the scrotum and anus. When it is irritated or compressed, it can cause pain during or after ejaculation along with pain between the scrotum and anus, penile burning and rectal pressure.18Beckham Physical Therapy and Wellness. Pudendal Neuralgia Physical Therapy in Houston, Spring Branch & Memorial

Nerve pain often shows up as a burning or raw feeling between the scrotum and anus rather than a deep ache in the belly. Some men feel as if they are sitting on a ball, or have rectal pressure that builds toward the end of the day. It is often burning, electric or tingling rather than aching, usually worse sitting and better standing or lying, and may come with numbness.

Pain after a procedure is a recognized pattern. Painful ejaculation is described in men after prostate removal surgery.19PubMed. Painful ejaculation After vasectomy, some men have pressure or pain after ejaculation, a dull testicle ache and pain with sex.20Mayo Clinic. Post-vasectomy pain syndrome – Symptoms and causes Tell your doctor about any operation in the groin or pelvis, even one from years ago.

Hernia repair usually relieves sexual pain caused by the hernia. Rarely, mesh or scarring causes new groin pain, and pain that starts after surgery should be reported to your surgeon.

Medicines That Can Make Ejaculation Painful

Painful ejaculation has been reported with older antidepressants like clomipramine and imipramine, and with fluoxetine, venlafaxine and others.21PubMed. Painful ejaculation and urinary hesitancy in association with antidepressant therapy: relief with tamsulosin It has also been reported with antipsychotics and with the muscle relaxant cyclobenzaprine.22PubMed Central. Painful Ejaculation with Cyclobenzaprine: A Case Report and Literature Review Psychiatric drugs can change ejaculation, orgasm and urine flow.23PubMed. Genitourinary and sexual adverse effects of psychotropic medication If the pain began after starting a drug or raising a dose, mention it to your prescriber, but do not stop the drug abruptly. When listing what you take, include over-the-counter products and supplements.

Timing is a useful clue. Pain that began within days or weeks of starting a medicine or raising its dose points more toward the drug, while pain that was there beforehand makes the drug a less likely explanation.

A conversation with your doctor can lead to a lower dose or a switch to a different drug. In some reported cases a prostate-relaxing medicine eased the pain. Drug-related painful ejaculation is uncommon, so other causes still need checking.

Signs That Need Urgent Care

Go to an emergency department for any of these:

A twisted testicle cuts off its own blood supply, and the testicle can be lost within hours. The pain is sudden and often comes with nausea. Don’t wait to see if it settles.

Some things are less urgent but worth booking soon: blood in the semen, burning when urinating, pain that recurs every time for more than a couple of weeks, or a bulge in the groin.

What a Doctor Will Check

Most visits start simple. The doctor asks where and when it hurts, and about urine symptoms, sex, surgery and medicines. They may use the prostatitis symptom questionnaire, which scores pain areas and ejaculation pain.29PubMed Central. Chronic prostatitis: Current concepts An exam may include the groin to look for a hernia, the testicles, and a rectal check of the prostate. An ultrasound through the rectum is the main scan for painful ejaculation, with MRI used more when surgery is considered.30PubMed. Diagnosis and management of symptomatic seminal vesicle calculi Symptom severity does not always match what the scan shows.31PubMed. Diagnosis of chronic abacterial prostato-vesiculitis by rectal ultrasonography in relation to symptoms and findings

The rectal exam is brief. The doctor gently inserts a gloved finger into the rectum to feel the prostate, which sits just in front of it. That shows whether the gland is tender, swollen or unusually firm, and whether it hurts more on one side. Tight pelvic floor muscles may also be noticed.

To prepare, note which side and exactly where it hurts, and how long the pain lasts after ejaculation. Bring a list of all medicines and past operations. Mention any new partner so infection testing can be done.

Normal tests aren’t a dead end. Many men with long-lasting pelvic pain have normal results, which can point toward muscle or nerve causes. Ask about referral to a urologist or pelvic floor therapist.

How It Is Treated

Treatment follows the cause. Bacterial infections are treated with antibiotics. Hernias are repaired surgically.32PubMed. Pain during sexual activity before and after laparoscopic inguinal hernia repair Pelvic floor physical therapy treats tight muscles, though research on it for sexual problems is still early.33PubMed Central. Pelvic physical therapy for male sexual disorders: a narrative review Because stress worsens pelvic pain, stress management can be part of treatment.34Mansoura Medical Journal. The Association between Stress-related disorders and Chronic Pelvic Pain Syndrome in males: A Narrative Review

Antibiotics are used when a bacterial infection is found or strongly suspected, and the course for a prostate infection is often several weeks rather than days. Finishing the full course matters, because stopping early can let the infection return. If tests show no infection, antibiotics are unlikely to help and a different approach is usually chosen.

Pelvic floor therapy starts with learning to relax the muscles using breathing. It adds stretches and gentle hands-on release of tight spots, usually in weekly sessions over several weeks, with home exercises between visits.

While you wait for an appointment, warm baths can relax pelvic muscles. Avoid long stretches of cycling or sitting, and stay hydrated to ease urinary irritation. If a doctor has ruled out serious causes, don’t avoid sex out of fear.