When did you get your first u/s

Randi • Mommy to a beautiful little girl and pregnant with baby #2 due august 2015
Wondering when your first ultrasound was that you saw baby and heard it's heartbeat? I went in and thought I was 6w1 but sac was measuring less than 6 more like 5w3 and the baby wasn't visible yet. My blood hcg levels are good but they are making me wait TWO more weeks for another ultrasound. I'm going crazy