Measuring behind ?

Kaitlyn

So I had an ultrasound on 02/12 and they measured me at 6w2d. First picture is from that day. Heartbeat was 121

Due date 10/05. LMP was December 30th.

Had another ultrasound today 02/17 and they measured me at 6w4d. Second picture is from today. Heartbeat was 136

Am I measuring behind ? I thought I was suppose to be 7 weeks today.