Warts?

I've been with my girlfriend for almost a year now, completely faithful. About 4 months ago, i got a bump around my belt line, and it seems like they've slowly spread around my beltline area, down to my pubic hair. I've read up and come to the conclusion they're most likely genital warts, but my girlfriend got checked when she went to get on birth control, which we had unprotected/condom sex many times before she went, and everything was fine. None of these bumps get very big, but there are some that are right next to each other/ almost on top of one another. I was thinking maybe my boxers rubbing against it spread them around the area. There is nothing on my penis at all, only below my belly button, down to the pubic hair. any help would be appreciated. Tweet