If you notice this after intimate relations, you should immediately go to your doctor

One of the rare side effects of sex is mixed. According to Dr. Leila Frodsham, obstetric consultant and gynecologist, although it is extremely rare, many people may experience nausea after having intimate relations.

If you have experienced this, then it may be because of endometriosis or perhaps because of cervical stimuli, which is very sensitive. Of course, many women would link that feeling with pregnancy, but that is not the case.

One reason is the cervix, which is stimulated to the extent of sex, that it creates a vascontrination that leads to a drop in blood pressure. Dr. Lauren Steicher explained that the cervix's neck changes during menstruation, making you more inclined to feel mixed after sex.

The other reason is very rare and may be a symptom of a psychological condition known as the disorder of sexual disgust, which can be derived from previous negative sexual experiences or unpleasant thoughts that you might link with sex.