Could I be....?

michelle • Full time mom, model,pastry chef, wife.
So July 9th was my last period. July 12th we had unprotected sex. July 14th I experienced reddish brownish discharge. I felt pregnant but everyone said it was to soon. So now I'm 4 days late, I got minor cramps that come and go. But I don't have any pregnancy symptoms. Could I be?? I took a pregnancy test last week, but it was negative. What now?