hi i am trying to conceive, i had unprotected sex on may 28. My period is due on the 4th or the 6th of june. 2 days after sex i noticed a think brown discharge, it also happened the next day but only a few spots and thinner almost water like. I have indigestion , been moody, twinges in my lower stomach in the uterus, constipation , dizziness , and flatulance. Could I be pregnant or is it to early to tell?