Has anyone been in this situation?

Christina
I went for my first US today. I was suppose to be 7 weeks due to my LMP but when we did the US I measured at 5 weeks and the sac was empty. He said it still could be to early to see anything. So did some more HCG bloodwork and going back next Friday. Has anyone been in this situation and turned out ok? I am so scared of another MC. I still have pregnancy symptoms and no bleeding or cramps.