I need help

Lexi
So me and my be had sex the other night for the first time and I have always had pain during sex and it just hurts everytime but besides the point it's now 4 days after and since then I have had a stinging feeling inside my vagina that gets worse when I touch it, it does hurt to pee or anything but it is starting to itch. Any ideas on what this may be? Doesn't sound like an std but maybe a tear or something I'm not sure. It's just stinging with slight burning and now itching. Please give advice