Thought I'd introduce myself, 35y/o, live in Seattle, this is third pregnancy after back to back chemicals. Just found out the twin thing yesterday. Naturally occurring, no family history, came as quite a shock. Had US to confirm placement and heartbeat at 6w2d, looked like a normal single pregnancy, appointment yesterday at 8w6d, asked them to just confirm heartbeat still there and they found two. Still can't believe it, but I'll take any advice I can get!!