I have one red bump on the inside of my vagina but its not so much a bump as it is something that is completely off the skin and you can pull on it. Its bright red, itchy/burning and it bleeds sometimes. The bleeding I think started Thursday, I thought it was my period but the blood was bright red like from a cut
I've had a boyfriend for 3 yrs and have not cheated on him, and we haven't even had sex in about 2 weeks, he has nothing

You should still go see a doctor to rule out any sexually transmitted disease, your boyfriend (hate to say it) may have been unfaithful, and sometimes the infections do not appear for some time.