It hurts when my boyfriend and i have sex... Why?!

It hurts when my boyfriend and i have sex... Why?

I am 17 years old. My boyfriend is 18. We have been together for 2 years and have been having sex for little under one. He is larger than the other 2 ppl i have been with, so it hurt a little bit the first few times we have sex. But somtimes theres a couple weeks to a month where it hurts really bad when we have sex. We use lube and condoms everytime, so i know its not cause im not er.. aroused. But im not sure what is wrong? can anyone help? It's not like it hurts continually why we are having sex just the first few moments but sometimes the pain is unbearable and we just have to quit altogether. It's begining to be annoying. I'm also kind of scared, does anyone know whats going on?

2 weeks ago
Well i cant really ask my doctor because my mom doesnt know im having sex. I get my birth control at planned parenthood. should i call them?

You might have a bad yeast infection if you're experiencing a burning sensation. Nothing to worry about too much. You should go to your doctor to get it checked out so you can get medication for it and also to check if it's something else.