Today was our first ultrasound. Thinking I was 6 Weeks cause my egg transfer was in February 4th. Today when we went in there I am measuring 5 weeks 5 days. Dr made the comment saying I should be 6 weeks as of today,but its not measuring that big. Is that a bad thing? There was a ga sac, and they found a yolk sac but no embryo...is this bad? Does this mean we are not pregnant?? Please someone tell me what's going on...our dr wasn't concerned...he wanted to see us back in 2 weeks. I just am worried cause I already had 1 miscarriage and has just been feeling cramping. I am just nervous and want to not be stressed...can anyone help??