Had our u/s today at 5w5d. No heartbeat yet, but there is a singleton measuring 5w6d along! We are both relieved and disappointed both didn't stick (I suspect DH is more relieved than disappointed..he was very concerned about having two babies without getting to "practice with one first"...lol,) but SO very happy the one is looking good so far.
We will most likely go back in 10 days or so, I was told.
I would post the u/s pic, but really, it is just a speck baby and rather boring as far as those things go.
Hooray for speck baby!