Erin, that is fantastic news, you got to see the heartbeat and the bpm is perfect too for 6w5d! I would trust what the RE said, 6w5d is where you're at. It makes sense to me with the bpm rate. She gave you 3 pictures? Do you think she just took the measurements wrong and had to correcct them? I would try to focus on the most important thing, that strong heartbeat! I'm so happy for you!!!