Your appendix is on the lower right side of your abdomen, near where your small intestine connects to your large intestine. More specifically, it’s a small, finger-shaped pouch that sticks out from the cecum, which is the very first section of your large intestine. For most people, this puts it a few inches inward from the right hip bone.
How to Find the Exact Spot
There’s a well-known surface landmark called McBurney’s point that marks where the appendix sits. To find it, imagine a line from your navel to the bony point at the front of your right hip. McBurney’s point is roughly two-thirds of the way along that line, about 1.5 to 2 inches from the hip bone toward the navel. This is the spot where doctors press when checking for appendicitis, and tenderness there is considered the single most important physical sign of an inflamed appendix.
It’s Not Always in the Same Position
While “lower right abdomen” is the textbook answer, the appendix can sit at different angles inside the body. A study of 377 cases found that only about 24% of appendixes hang straight down from the cecum in the expected position. The most common variation, occurring in nearly 44% of people, is a retrocecal appendix, meaning it tucks behind the cecum rather than dangling below it. Other people have an appendix that points toward the pelvis (about 9%) or wraps behind loops of the small intestine (about 14%).
These variations matter because they change where you feel pain if the appendix becomes inflamed. A retrocecal appendix can cause more back or flank pain. A pelvic appendix might create discomfort lower in the pelvis, which can be confused with bladder or gynecological problems.
When It’s on the Left Side
In rare cases, the appendix is on the left. This happens in people with a condition called situs inversus, where the internal organs are mirror-flipped from their normal positions. It affects roughly 1 in 10,000 people. Many don’t know they have it until imaging for an unrelated issue reveals the reversal. The practical concern is that appendicitis pain shows up on the “wrong” side, which can delay diagnosis if neither the patient nor the doctor is aware of the reversal.
How the Appendix Shifts During Pregnancy
Pregnancy pushes the appendix out of its usual spot. As the uterus expands, it gradually displaces the appendix upward and rotates it. Research using MRI scans found that by the second trimester, the appendix had already moved out of the lower right quadrant in all patients studied. By the third trimester, 72% of pregnant patients had the appendix up in the right upper region of the abdomen, with another 22% in the right middle region. Only about 5% still had it in the expected lower right area.
This shift is one reason appendicitis during pregnancy can be tricky to identify. The pain may appear higher on the right side than expected, sometimes near the ribs rather than near the hip.
What Appendicitis Pain Feels Like
Appendicitis typically doesn’t start where the appendix actually sits. Most people first notice a vague, dull ache around the navel. Over the next several hours, usually 12 to 24, the pain migrates to the lower right abdomen and becomes sharper and more localized. This pattern of pain starting at the belly button and moving to the lower right is one of the classic indicators doctors look for.
Coughing, walking, or pressing on the lower right abdomen tends to make the pain worse. Some people instinctively draw their knees up toward their chest because it relieves pressure on the inflamed area. Nausea, vomiting, low-grade fever, and loss of appetite often accompany the pain.
Other Causes of Right-Sided Pain
Not every pain in the lower right abdomen is appendicitis. Several other organs and conditions can produce discomfort in the same area:
- Ovarian cysts or ovulation pain can cause sharp, one-sided pain in the lower abdomen that mimics appendicitis closely, particularly on the right side.
- Ectopic pregnancy produces sudden, severe lower abdominal pain, sometimes with vaginal bleeding.
- Endometriosis or pelvic inflammatory disease can create chronic or recurring pain in the lower right quadrant.
- Kidney stones passing on the right side may radiate pain into the lower abdomen and groin.
- Inflammatory bowel conditions affecting the end of the small intestine, which connects near the cecum, can feel similar to early appendicitis.
Severe, worsening pain in the lower right abdomen, especially if it started near the navel and moved, warrants emergency evaluation. A ruptured appendix can lead to serious infection within hours, so this is one situation where speed matters.