A period lasting longer than 7 days is considered prolonged, and there are several effective ways to stop or shorten it depending on the cause. Most normal periods last 4 to 5 days with relatively light blood loss (about 2 to 3 tablespoons total). If yours regularly stretches beyond a week, soaks through a pad or tampon in under 2 hours, or involves passing large clots, that crosses into what’s clinically defined as heavy menstrual bleeding, and it’s worth investigating why.
Why Your Period Won’t Stop
Prolonged bleeding has a wide range of causes, and knowing the reason matters because it determines which treatment actually works. Gynecologists group these causes into two broad categories: structural problems in the uterus and non-structural problems.
Structural causes include polyps (small growths on the uterine lining), fibroids (noncancerous muscle tumors in the uterine wall), and a condition called adenomyosis where the lining tissue grows into the muscular wall of the uterus. Less commonly, precancerous or cancerous changes in the lining can cause prolonged bleeding.
Non-structural causes are more varied. Ovulatory dysfunction is one of the most common: if your body doesn’t ovulate regularly (due to stress, thyroid problems, polycystic ovary syndrome, or perimenopause), the uterine lining can build up unevenly and shed unpredictably. Bleeding disorders that affect clotting, certain medications like blood thinners, and hormonal contraceptives themselves can also trigger prolonged episodes.
Anti-Inflammatory Painkillers Can Reduce Flow
Over-the-counter NSAIDs like ibuprofen and naproxen do more than relieve cramps. They also reduce menstrual blood loss by blocking prostaglandins, the chemicals that trigger uterine contractions and influence how much the blood vessels in your uterine lining open up. Naproxen taken at the start of a period reduced blood loss by 37 to 54 mL compared to a placebo in clinical studies. Ibuprofen at 400 mg three times daily decreased loss by about 36 mL.
These reductions are modest, so NSAIDs work best for periods that are slightly prolonged or heavier than normal rather than severely heavy bleeding. The key is starting them right when bleeding begins, not waiting until it’s already heavy. For mild cases, this may be enough to shorten a period by a day or two.
Tranexamic Acid for Acute Heavy Bleeding
Tranexamic acid is a prescription medication that helps blood clot more effectively. It doesn’t contain hormones. It works by preventing clots that have already formed in the uterine lining from breaking down too quickly, which slows blood loss. The standard regimen is two 650 mg tablets taken three times a day for up to 5 days per cycle.
This is one of the faster-acting options for stopping a prolonged period because it targets the bleeding directly rather than trying to rebalance hormones over time. It’s taken only during the days you’re bleeding, not continuously, which appeals to people who want a non-hormonal, as-needed solution.
Hormonal Treatments That Stop Bleeding
Hormones are the most effective category of treatment for prolonged periods because they directly control the uterine lining. Several options exist depending on whether you need to stop an active bleed quickly or prevent future episodes.
Oral Progestins
A short course of an oral progestin can stabilize a thickened, irregularly shedding uterine lining and bring bleeding to a stop. Progestin essentially tells the lining to stop growing, reorganize, and then shed in an orderly way once you stop taking it. A typical prescription runs 5 to 10 days. After you finish the course, you’ll usually have a withdrawal bleed that’s more like a normal period, and the prolonged bleeding episode ends.
Birth Control Pills
Combined oral contraceptives (containing both estrogen and a progestin) thin the uterine lining over time and regulate your cycle. For an active episode of prolonged bleeding, a healthcare provider may prescribe a short course of pills for 10 to 20 days to get the bleeding under control. Once you’re on a regular pill schedule, periods typically become shorter, lighter, and more predictable.
Hormonal IUD
A levonorgestrel-releasing IUD is one of the most effective long-term solutions. It delivers a small amount of progestin directly to the uterine lining, thinning it dramatically. Blood loss drops by about 86% within the first 3 months and 97% by 12 months. Many people eventually stop having periods altogether. The tradeoff is that it takes weeks to months to reach full effect, so it’s not a quick fix for a bleed that’s happening right now, but it prevents the problem from recurring.
What to Expect at a Doctor’s Visit
If your periods regularly last more than 7 days or you’re experiencing a bleed that won’t stop, a provider will typically start with a pelvic exam and blood work. A complete blood count checks for anemia and infection. You’ll likely also have a pregnancy test and possibly tests for bleeding disorders or thyroid problems.
Imaging comes next if needed. A pelvic ultrasound is usually the first step, using sound waves to look for fibroids, polyps, or other structural problems. If the ultrasound isn’t conclusive, your provider might recommend a sonohysterogram (where fluid is placed in the uterus during an ultrasound for a clearer picture), a hysteroscopy (a thin camera inserted through the cervix to view the lining directly), or an endometrial biopsy, where a small tissue sample is taken and examined under a microscope. The biopsy is particularly important for people over 35 or those with risk factors for endometrial changes.
Procedures for Persistent Cases
When medications don’t control prolonged bleeding, or when a structural cause like a large fibroid or polyp is identified, procedures may be the next step.
Endometrial ablation destroys the uterine lining using heat, cold, or other energy sources. It’s a minimally invasive outpatient procedure, and most people return to normal activities within 48 hours. Within two to three months, periods become noticeably lighter, and some people stop bleeding entirely. Ablation is only appropriate if you don’t plan to become pregnant in the future, since it makes the uterus unable to support a pregnancy safely.
Polyp or fibroid removal (through hysteroscopy or surgery) can resolve bleeding caused by those specific growths. Hysterectomy, the removal of the uterus, is a last resort but a definitive one. It’s typically reserved for severe cases that haven’t responded to other treatments.
Signs of Anemia From Blood Loss
Prolonged or heavy periods are the most common cause of iron deficiency anemia in premenopausal people, and the symptoms can creep up gradually enough that you don’t realize how depleted you’ve become. Watch for extreme tiredness that rest doesn’t fix, weakness, pale skin, dizziness or lightheadedness, cold hands and feet, a fast heartbeat, shortness of breath with normal activity, and brittle nails. Some people develop unusual cravings for ice, dirt, or other non-food items, which is a well-documented sign of severe iron deficiency.
If you’re experiencing these symptoms alongside prolonged bleeding, it’s important to get your blood levels checked. Iron deficiency from chronic blood loss is treatable, but it won’t resolve on its own while the bleeding continues. Addressing both the anemia and its cause is essential.