Can gas enter the uterus

Answer 1

A uterine air embolism is technically possible, but exceedingly rare and unlikely. It would require a combination of high air pressure, trajectory of flow, and a very relaxed cervix. (However, health professionals strongly advise against sexplay with air jets, hot-tub jets and the like, due to that slight possibility.) Normal flatulence that occasionally enters the vagina as a result of sitting at a particular angle or "clenching" cannot possibly create enough pressure to enter the uterus, nor can sexual intercourse - unless the cervix were dilated due to advanced pregnancy, labour or a laminary insertion prior to a D&C procedure. A woman in either situation would likely be paying rather more attention to her bodily comfort.

How do I know all this? I used to work in an OR, and have fielded this question more than once from an anxious patient. The only uterine air embolism I have ever heard of in reality was a post-delivery incident, involving a woman's cervix that didn't contract as quickly as normal. She was cathetered, and the gas passed without harm.