I am a young teen and have never been sexually active. Yesterday was the first time I ever even kissed a girl. It was my girlfriend, and we made out. Today I noticed that underneath my tongue, at the bottom of the thing that attaches your tongue to the bottom of your mouth, is a little sore, and it may have a bump on it. I'm not sure what it is, is it just a sore, or could it be an std? My girlfriend says she doesnt have anything like that, and I believe her. But i'm to afraid to tell my mom( atleast until I know for sure that it's an std) because she would be soo upset knowing that I even made out with a girl. I have a couple of little clear bumbs on the frenulum in my mouth, the thing that connects my tongue to the base of my mouth. It hurts a little bit, and now the tip of my tongue is a little sore, it may just be raw though. I don't know if it is herpes or what. There isnt blisters or anything. It's been 3 days since I kissed her. Do you think it's an std?