If you feel nauseous after intercourse, it is possible that the relatively rough movements during intercourse may cause the uterus to contract and therefore cause nausea. In addition, nausea caused by the position during intercourse, such as cervical spine enlargement may also cause nausea symptoms. It is recommended to improve the roughness during sex first, if the improvement is still nausea, promptly go to the hospital to check whether the cervical spine has hyperplasia, cervical disc herniation and other corresponding diseases, the clinical then give the appropriate treatment. Under normal circumstances sex will not cause discomfort, because sex is a normal physiological activity, once the discomfort is recommended to go to the hospital in time for examination.