I was suppose to start on the 1st, but today is the 6th, and no blood yet. however, I thought for sure I was starting on the second because I had bad cramps and my stomach felt sick, but I never actually bled red. I did have a pad on and was ready and the most I did was spot this brownish tanish color. my lower back has been hurting, and my boobs look fuller and have been sensitive, but those are normal pms symptoms for me. Also yesterday my SO and I dtd, and afterwards I spotted a pin pick of bright red, and a tiny bit of pink coloring in my cm, but that was all. no more for the rest of the night. Today I feel crampy pretty much like I will start my period, but I can't help wondering what is up. could I be pregnant?