Ive been off my period for about 7 days, i finished an anti biotic 2 days ago for a mouth infection. I had sex last night, it hurt, and my vagina was burning when I had to pee, I thought maybe he rubbed me raw or something. Today ive been burning and itching all day and my lower abdomen hurts, I had to pee and wiped blood. Could it be possible that I have a yeast infection from the anti biotic? Or may have ruptured something? Ovarian cysts run in my family and ive always been afraid ill get one. I dont have insurance and cant waste the money on something not serious.