It sounds like constipation. Alternatively I suppose it could be related to gynecological issues. Have you asked a gynecologist?
Hi
Welcome to the MedHelp forum!
Rectal and vaginal pain can be due to pinched pudendal nerve, vaginal infection, gas in rectum, hemorrhoids, or due to fissures or IBS.
When you have pain next, get it investigated at that time. Since it comes only once or twice a year, it can be due to gas, possibly due to something you ate. It is difficult to assess a cause like this that comes so infrequently. Consult a doctor when the pain comes next. Take care!