Anxiety :/

I went for my first appointment today thinking I was 9 weeks, based on my LMP. Based on the ultrasound, I'm actually 6 weeks and 1 day. Got to seen the little bean's heart beat but it's only 95. They aren't concerned because it's earlier than they thought.  Going back in two weeks for another ultrasound. I'm super nervous about all of this and was hoping today would put my mind at easy but it seems to have only made it worse :( anyone else felt this??