Many people experience abdominal tightness or discomfort after having sex during ovulation. This symptom is called "ovulatory discomfort" or "post-ovulation discomfort" and usually occurs within a few hours after sexual intercourse. However, some people may feel this discomfort for several days or longer.

The reason some people may experience discomfort may be due to overstimulation of the abdominal muscles due to the use of sex toys or incorrect posture during intercourse. Additionally, some people may experience abdominal tightness after intercourse, possibly due to tight abdominal muscles from excessive exertion or a lack of relaxation during intercourse.

If women experience abdominal tightness after intercourse, it is recommended that they rest for a while and try to relax their abdominal muscles. You can also try some deep breathing or progressive muscle relaxation exercises to help relieve abdominal tension. If the discomfort lasts for several days or longer or is accompanied by other symptoms such as pain, fever, or diarrhea, it is recommended to consult a doctor.

For men, if a woman experiences tightness in her abdomen after intercourse, it may be due to the use of sex toys or incorrect posture during intercourse, resulting in overstimulation of the abdominal muscles. Additionally, some people may experience abdominal tightness after intercourse, possibly due to tight abdominal muscles from excessive exertion or a lack of relaxation during intercourse.