I had my ultrasound this morning. According to my dates (which could be off a day or two), I should be 6w6d. According to LMP they have me at 6w4d. There is a gestational sac measuring 5w2d and a yolk sac. I go back in two weeks. I know the dating of a gestational sac is not as accurate as the crl of a fetal pole but I'm not feeling very hopeful. I know babe implanted late (11-12dpo) so I'm hoping he or she is just trying to catch up. That hope is pretty small, though.