People refer generally to "the stomach" but are not specific as to what area hurts. The "stomach" is an organ that is in one specific place in the body. Often, people use the word stomach when they mean abdomen.
The abdomen
The "abdomen" is the front area of the body that begins at the end of your ribcage and ends at the pelvic bone. The organ called the stomach is right at the top and about in the center of the abdomen right below the ribcage (and part is within the ribcage). The liver, spleen, pancreas and gallbladder are on the sides up near the stomach, along with the beginning of the small intestines.
In the middle area is the small and large intestines. On each side are the kidneys, one on each side.
In the bottom sections of the abdomen is the end of the large intestines leading to the rectum, as well as the urinary bladder. In females, the uterus is in the middle of the bottom section of the abdomen. Two ovaries, one on each side, sit alongside the uterus and a fallopian tube extends from the ovary (1 tube+ 1 ovary on each side). The uterus extends downward, with its end being the cervix which sits at the top of the vagina (inside the vagina. At the back of the vagina, separated by a wall of tissue, is the rectum that ends at the anus. All of the organs and structures in the bottom section of the abdomen are held in place by ligaments, tissues, and muscles.
When a woman asks, "Why does my stomach hurt after sex?", it is impossible to answer without asking for more information. The first question is Where in the abdomen?
Causes of abdominal pain after sexual intercourse
Upper Abdomen - Muscular pain
Some women can have muscular pain because of deep, heavy breathing during sex. This feels like being sore after jogging or after a work-out. The pain would go away within a day.
Upper Abdomen - "the stomach organ"
Some women inhale a lot of air during heavy breathing. This can cause bloating and discomfort. As the "air" passes from the stomach (organ) into the intestines, the woman will eventually "pass gas" and the discomfort is gone.
Some women have a hiatal hernia-- the top of the stomach (organ) protrudes upward when laying down. A hernia allows for gastric reflux. Reflux can cause burning, a bad acidic taste in the mouth, and "pain" in the stomach (organ). Being upright lessens the discomfort. The woman could also feel nauseated. If this is your pain, you should see a doctor. Eat a small meal, but nothing heavy, before sex.
Middle abdomen - gas & the intestines
Since the middle abdomen has mostly the intestines, "pain" could simply be gas. Or, activity has helped move the stool in the intestines downward and ready to be expelled in a bowel movement. If you are gassy after sex, try laying on your left side for a while. You can massage your belly in downward strokes to help move the gas downward. If you have a pattern of constipation, this kind of pain can be common after sex since activity helps the natural movement of stool in the intestines.
Sides - Kidneys
If you have a severe pain on the side and back, you may have a kidney infection. This pain won't just go away on its own. Usually a person also has a fever. See a doctor for diagnosis and antibiotic!
Lower Abdomen - the Appendix
I mention this only because it is low in the abdomen. This pain is very distinct. It is not related to sexual intercourse. It would get progressively worse. If the pain "stops" for a short while, it is much more severe when it returns (and it will return quickly). The person often spikes a very high temp. The person is very ill and needs to go to an E.R. quickly.
Lower Abdomen - Female Organs - The Cervix and Uterus
Of all the possible "pains" after sex, the cervix and uterus are most often part of the problem. When the depth of the penis is pushed in too hard, it can hit the end of the cervix. It's like someone hitting you on the end of your nose again and again. But the cervix is connected to the uterus, and ligaments that support the ovaries and fallopian tubes. As an analogy, if you tie a string between two points and then "snap" the string in the middle, you can see how it would "pull" on both sides. That's similar to how the uterus and ovaries slightly "move" when the cervix is hit.
As well, the uterus is not completely immovable. Meaning, it's not like a parked car. Since the uterus is "held" in place by ligaments, the uterus can "move" slightly (often tipping forward or backward). This can cause a generalized "hurt" feeling. If you've had a baby before, the ligaments are "looser", more stretched. So the movement can be more than in a woman who never had a baby.
Lower Abdomen - the urinary bladder
The urinary bladder is very near the uterus and can "hurt" as a result of force, depth of the penis, or a urinary infection.
Lower Abdomen - Urinary Tract Infection
Many women have few symptoms. Many start off with a feeling that the bladder "hurts", before ever having the classic UTI symptoms of burning during urination, having to go frequently, etc. Some women run a fever; others don't. Have a Clean Catch urine test to rule out UTI.
Lower Abdomen - Female Organs - The Ovaries
The fallopian tubes and ovaries are held by the same ligaments, almost like a hammock. Every "pull" or movement of the uterus can "jostle" the ovaries. Here, the pain would be in the low abdomen, off to one side or both.
Lower Abdomen - Female Organs - Cysts on The Ovaries
Cysts on one or both ovaries are common in females. These are often a bubble-shaped area, often filled with fluid. Throughout the cycle, cysts can increase in size -- or stay the same. Make sure to ask your OB-GYN doctor if you have any cysts and ask if you should have an ultrasound. Some cysts can grow to be the size of an orange, a grapefruit, or larger. So, if your pain is low belly and to the side, tell your doctor. If the pain is worse during your cycle, tell the doctor.
Lower Abdomen - Female Organs - Pelvic Inflammatory Disease (PID)
When a woman has an untreated vaginal infection, it can quickly travel up into the uterus. Once in the uterus, sex can cause pain pretty much from right below the belly button to the pelvic bone -- i.e. "all over". The pain doesn't really "stop" but can be less without sex. The infection can cause immediate pain when the penis (or anything) is inserted into the vagina. PID is a serious infection. Untreated, it can cause sterility (inability to have children). The pain is severe. If your pain is vaginal and / or "all over" the lower abdomen, see a doctor immediately.
Lower Abdomen - Female Organs - Cystocele or Rectocele
In women who have had a child or children, the bladder can "fall" and pouch against the vaginal wall. This is called a cystocele. The same pouching can happen with the rectum (inside area) behind the vagina. This pouching is a rectocele. Both of these conditions can cause pain during an after sex. Your OB-GYN can often feel the pouching when he/she examines the vagina. There are few treatments. Surgery does not always work. So you may need to change the position you use during sex. For example, "on top" or being on your side helps stop the depth of the penis and the pulling on the cervix and other organs.
As you can see, many things can cause "hurt" in the abdomen after sexual intercourse. It's important to tell your doctor the specific area -- point to the spot. Tell the Dr all of the symptoms. Get a diagnosis -- do NOT assume you know what is causing YOUR pain.
MEN and women's pain after intercourse
Since most "hurt" or "pain" feelings in the abdomen after sexual intercourse are caused by the amount of force or depth of the penis, women need to tell men to STOP. A man does not have to "hit" the cervix, or hit it SO hard. Educate the male.
Sex can be just as pleasurable, even without the depth of penetration.
Certain positions help the penis to go behind the cervix, instead of hitting the penis on the tip of the cervix. Ask your doctor to explain to you and to the male how to avoid repeatedly hitting the cervix.
Also, repeated "hits" can cause damage to the cervix called dysplasia or abnormal cell growth in areas. Dysplasia can lead to cancerous cells and cervical or uterine cancer if not treated. Treatment is not fun for the female and usually means a few weeks at least of NO sex. So tell the male you need to stay healthy. He CAN control how far he inserts the penis and how hard he pushes. IMPORTANT -- *No male needs to "bang" against a woman's body; he and the female can still achieve pleasure without using the penis like a weapon. When a man continually hits the cervix hard and without regard for a woman's health, the penis has indeed become a weapon!
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