Has anyone seen anything on their ultrasounds yet? I went in at 4.5 weeks and couldn't see anything other than a thickened endometrium. Now I have to wait until 6.5 weeks (2/7) to get another...Has anyone seen their baby's yolk sac or heartbeat yet? I know it's early, but the suspense is killing me and not knowing what I'm going to see is freaking me out a little. Thanks y'all!