Pb I was exactly the same going for my 8 week scan, and it wasn't made easier by the fact they were running really behind on appointments, then I had a trainee do it who couldn't see anything, then they had to go internal, then he still took ages and the whole time I'm thinking it's going to be bad news.....then there it was, and the heartbeat was obvious.
You of course are bound to feel like this, why wouldn't you after all you've been through? You just have to keep going, no other choice. I have a good feeling about this for you tomorrow though, and then That's another 2 weeks you can tick off.
Keep us posted
Hugs xxxx