I found out yesterday by mistake. I was cramping and the dr. worried it was ectopic, u/s showed 2. It is so early, I was only 5w4d (one baby measured larger at 6w3d). I'm very afraid we will lose one.
I found out exactly the same way (cramping, went to the ER, thought it was apendix/eptopic/something bad and ended up with two) and same time you did. I was worried too, good luck and congratulations.
Re: How early did you know?
I found out at 5w b/c I got pg with an RE who does the first US at 5w (i had one every week until 9w).
congrats! Try not to worry - there's nothing you can do to change things... and chances are it will be just fine - for both of them
We also found out around then due to some spotting issues. We went back at 8 weeks and saw 2 heartbeats. Congrats.
Kerri
we found out at 8 weeks because of some spotting. i had a feeling though
good luck!