2nd appointment, changed due date

So I had my first appointment on the 16th and it was to early to tell anything. Based on my LMP he figured I was due Dec 9th. He saw the sac and yoke and was happy with that but wanted me to return in a week to go over bloodwork and to do another scan. I go in today and I could not be happier!! My bloodwork was perfect! I knew that already because that's what I do for a living 😂 read bloodwork. We did another scan and I was able to see my peanut! Heart rate was at 130 and measures 6w2d. My new due date is December 15th! I am so excited. This is my first pregnancy and I couldn't be more happy with it.