I just read a post that had this title and reading the responses brought me back to last May when I had unexpectedly got pregnant after so long. I was 6 weeks and 6 days when I went for my first ultrasound. I had read that I might be able to see a flicker at that stage. My doctor saw nothing in my uterus. No flicker, no sac, nothing.
My little bean was in my right tube, an ectopic pregnancy. I had surgery the next day to aspirate (not sure if this is the right word) it from my tube. I was so devastated and depressed for a long time. It was the reason I went on anti-depressants. I'm not stranger to heartache, but that was by far, the worst emotional pain I have ever experienced in my whole life.
I really hope this IVF works, and that I will actually get to see a sac and a heartbeat. It is something that many many fertile couples take for granted. There's a scene on the movie "Knocked Up", where she sees the flicker of the heartbeat for the first time and bursts out crying. That part always makes me cry....for the opposite reason that she did.