I'm 16 and my boyfriend has been getting a little rough down there, and my vagina is swelled and has been for the past couple months. I don't know what to do and it's making me nervous but I can't talk to my mom. What can I do to fix it?

If sex is making your vagina swell it would seem obvious and logical that you stop having sex and see your doctor, there also could be an infection etc..

Go see your doctor.