First ultrasound!

Virginia

So I went to my first appointment on 1/27 they also did a ultrasound that day as well. I started with the sono and according to my Lmp I should have been 8w3d that day. I was only measuring at 6w2d and all they could find was the gestational sac with the yolk sac. They seem confused as to why I’m showing earlier than expected but don’t seem to concern for a miscarriage as of right now due to the fact the gestational sac was at the proper measurement for 6w. So I got back the 9th of February to see if my embryo is going to be there and if I’m going to continue to carry. We finished blood work today and I find out Monday what my results are. Has this happened to anyone and did you end up with a healthy pregnancy?