Question about 1st Ultrasound??

Katie

Okay so today was our first ultrasound. My husband Erik was allowed in the room with me and after a 6 week loss in January of this year we were able to see the heartbeat today and our little one for the first time. Baby Baer is measuring 3 days earlier (smaller) than I had calculated. (This would make BB 6wks, 5dys instead of 7wks, 2 dys). However the doctor also estimated the heartbeat at 160! I’m a little nervous that the size is so small and the heartbeat is so fast. Any comments or insights from the more experienced mamas on here? (Which would be 90% of you since this is my first baby)!