What is going on? Help!

ok, long story short. Last time I had sex was two months ago, and right after I got my period. Fast forward to last week, haven't been sexually active at all since and don't really feel stressed out lately, period is 10 days late. I have been dealing with a recurring yiest infection though, I don't have health insurance, so just been putting up with it. I have had problems with my uterus and tubes since childhood and I'm having pain all the time but this time the pain is different. What could be going on? anyone else had this problem?