I have had a pain in my left side of my vagina for about four years give or take. The pain is very rare but it does happen. Well the pain has become more frequent the past couple of months and Around one to two months ago I had my period. Well I took the plan b pill and a week after my first period ended I had another one and I haven't had one since. My gynecologist has also switched my birth control twice since that last period. I have taken multiple pregnancy tests and they all come back negative. Could the pain and the period be related? What's going on with my body?