Pain!

Recently I've been having pain down there. It's not inside my vagina, but more on the outside. It feels similar to a bruise, but I don't see any bruising. Also I've been hooking up with my guy the last three days and it was great up until yesterday when it switched between feeling like nothing and being painful. I'm pretty sure it's not what he's doing because he was being very gentle. He also said it just felt different. I iced my vagina a little last night, but u don't know what to do. Please help!