Boyfriend a cheater?

ShyAnne
Ok so I've had two partners. I already got check for stds, ganaria and clymidia. I was negative with my first, but now I've been with my boyfriend for 10 almost 11 months and it felt like a I have a uti but that test came back negative.. So, did my boyfriend cheat on me? Cause if I test positive for it I don't know what I'm gonna do!!!! Need major help!!