I've been with my boyfriend for a year now and in the beginning we had sex a lot and everything was fine. Then I started to swell after sex an incredible amount with it being very tender and a burning feeling when I peed afterward.  It goes away after a few hours most of the time and sometimes doesn't even swell but still has the burning feeling. Occasionally I get yeast infections and I am on loestrin 24. is it just cause my vagina is too tight from not having sex as often? I've tried using lube and usually that's okay but there is still the discomfort. It feels as though part of my vagina has been ripped or something.