I am very concerned. I had sex on the 5th of April, which would put me at right around five weeks pregnant. That is the only intercourse I have had before finding out I was pregnant at the beginning of May, so I know this is the right date. I have seen on the Internet that it should actually be seven weeks (if counting from the day of my LMP) but when I went to the doctor and had a blood test, they said I was right at five weeks as well. I had my first ultrasound yesterday and all the doctor could see was a gestational sac.. maybe two, he said... He wants me to come back in a week and have another u/s, but said we should already be seeing more than we actually are on the u/s.... all we saw were two TINY black sacs. He also mentioned a D/C if I come back and we cant see the fetus. Has this happened to anyone else? Should I go by my measurements, because if I count from that day in April forward, I would not think we SHOULD see anything but a sac yet? Please help if you have been through anything like this.. I am so worried... and I don't know if the doctor saw something unfavorable and just doesn't want me to know yet... thank you...