Pregnant?

Well I'm 15 and me and my bf have been together for a while now and we have in protected sex because I get utis from condoms constantly no matter what I do and lately like yesterday I got cramps and an reddish orange discharge and only once tho my boobs are sensitive and my head been hurting I have mood swings and always peeing I'm always tired and I find myself eating a lot more this past couple weeks about a month ago I took a test because I thought things were up but no they're negative I don't wanna test again because I don't think I am or wanna waste money what to do any advice?? And my period was 1½ weeks ago