I lost my virginity when i was 15, and after we broke up i got with another guy, we have been together for 7 months and we had unprotected sex once before but everything was fine, and not long ago we had unprotected sex again and he didnt cum in me but a week later i went to hospital and got a pelvic immflamatory disease, he was a virgin when he lost his virginity to me, but could he be the reason why i have this? and how could he have got it? and also a few days after i got out of hospital i have a sore, itchy sensation on the lower part of my vagina and near my buttocks... is that a sign of a STD? or can i be in risk of a STD?