Is it normal to have stomach pain the day after intercourse?
Generally speaking, whether abdominal pain the day after intercourse is normal depends on the specific nature of the pain and any accompanying symptoms. If there is severe discomfort or the pain does not subside, it is advisable to seek medical attention promptly. The detailed analysis is as follows:

If the pain is mild, brief, dull, or accompanied only by a sensation of pressure, and there are no symptoms such as vaginal bleeding, abnormal discharge, or fever, it is usually considered normal. This type of pain often results from vigorous movements during intercourse, causing temporary pelvic congestion or slight tissue stretching. The body typically recovers on its own with rest and does not pose a health risk.
If the pain is severe and persistent, or accompanied by vaginal bleeding, yellowish discharge with an unpleasant odor, fever, or other symptoms, it indicates an abnormal condition. Possible causes include poor hygiene during intercourse leading to pelvic inflammatory disease or cervicitis, or physical trauma due to improper movements causing corpus luteum rupture or endometrial injury. Timely medical intervention is necessary to prevent worsening of the condition.
When abdominal pain occurs after intercourse, sexual activity should be paused to allow the body adequate rest, and strenuous activities should be avoided to prevent aggravating the discomfort. Pay attention to changes in symptoms and maintain good external genital hygiene by washing with warm water to prevent infection. If the pain persists or is accompanied by abnormal symptoms, prompt medical evaluation is essential to determine the underlying cause and receive appropriate treatment as directed by a healthcare provider. Self-medication should be avoided to prevent delays in proper diagnosis and care.