His and Her Health

I am 19 year old have been sexually active for quite a while. I was on birth control for about 2.5 years went off it for about 7 months until I met my boyfriend (long distance) while he was home for a month we had regular non painful sex. He left and I started birthcontrol , after visitng the next time sex seemed normal until the second time we attempted and it was a very painful stinging sensation when he penetrated my vagina. I thought maybe the entrance to my vagina had teared as there was light pinkish blood when it wiped right after going to the bathroom. So i didnt think anything of it because thats happened before. He left after a weekend and then again after seeing him (home for 3 weeeks) every time we tried it was the same upon entry it was like an intense stinging, and most of the time after awhile it goes away but stings if it isnt making movement. I have a doctors appointment for this but i couldnt get in for quite some time. I am very curious if anyones had these symptoms and know what it is or what it COULD be. As its frustrating me and putting a strain on my relationship because i dread sex and that doesnt help my already long distance relationship. Thanks to whoever can help!

oh. ps i went off birth controll and the same thing happened nothing had changed.!