I'm having an ultrasound in a couple of days, and wondering what to expect from it. I'll be between 7.5 and 8 weeks pregnant at the time (depending on whether you go on when I think I conceived or what they said at my other scan a couple of weeks ago).

I know that the heartbeat should be visible. What rate should it be at (what is the normal range?)

How long should be baby be at this point?

Any other measurements of things they'll be able to do?

I'd like to know what to expect so that I know what questions to ask the doctor, if any are needed.

Any advice would be welcome!