I am a 5’0 petite person and my boyfriend and I have sex a lot.At least every few days since he live just a few houses away and comes over a lot.We’ve been doing it for a few months now but,a few weeks ago it started to hurt whenever we have sex.Is it because he puts his whole thing in deep and is big or is there something wrong with my vagina? I’ve been super itchy for a couple days now and I’m scared I have an infection.