So my boyfriend and I had sex right before my period. I got it, but it was super light and I had no cramps. I've been feeling nauseous and I've just been really exhausted all the time. I have diarrhea, and now I have my period again. It's light a light brown color. Usually my periods are really heavy and I have massage cramps, but both time I've had none. And I never get diarrhea or feel sick. Am I pregnant?