pregnant?

Haley
Hey! So I had my period two weeks ago and didn't think anything of it. I've been on birth control for four years and my period has been getting lighter. However, my last one only lasted a day and was more like a spotting and not an actual period. 
I've been really moody lately like getting mad at him for stupid stuff and then bawling my eyes out over nothing. Now I'm not stressed or anything as school just ended and everything but I don't know what else it could be. 
Also my boyfriend and I use condoms and he doesn't finish inside me. I took two tests. One last night and then again as soon as I woke up and both were negative. Should I wait for my next period or should I take another test in few days?