This is my situation: I was due for my period on 3/10/08. I had a ultrasound that same day, due to some slight pains I could be having due to my mild endometriosis. The Dr. said I should be starting anytime b/c my uterine lining is thickened (isn't it this way for implantation and after too? Usually have horrible cramps, and have none. At the Dr. they also did a preg test to make sure and it was negative, he said if I am it could be too early. He said if my period doesn't start in a few days to take another test. No sign of period still, no cramps, nothing (and I usually get extremely terrible ones). I keep getting these sudden sharp little twinges in my breast (only last a couple of seconds each). I also just starting taking my BBT last Wed. b/c I wanted to get used to it and have a full cycle after my period started (which didn't happen). Here are my temps (3/5=98.64, 3/6=98.67, 3/7=98.68, 3/8=98.28, 3/9=98.15, 3/10=98.21, 3/11=97.8 (down pretty low so I thought I would start a day late), 3/12=98.68(today, spiked back up). I don't know how I am normally. I am thinking about testing Friday morning (I'll be 4 days late by then). Does anyone think all that this could mean I am pregnant? Any help will be really appreciated :)