According to my first day of my last period I should be about seven weeks and some days along. Well I went to my baby's first appointment today and she did an ultrasound and she said that the only thing she could see was the gestational sac. She told me that it either means that I'm earlier then I figured or the baby isn't developing. Has anyone had this happen to them and were you early or did you miscarry? I'm just very scared I had a miscarriage two years ago and I just don't want that to happen. My dr scheduled another ultrasound in a week and I had a blood test today to check my levels and I will be getting a blood test done every 48 hours I'm just really worried and trying to stay calm. Any feedback is appreciated.