Good luck for tomorrow, Renstar! I had an internal scan at 8 weeks and I was so relieved to see and hear that everything was all right. I posted my 8 week scan in the gallery, if you'd like a look. It looks quite weird!
They check for heartbeat, size, position of placenta, placental development, I think. First scan they also check over your ovaries too. The scan didn't take long. And the internal scan never worried me. The sonographers are always very good.
Sending you good scan vibes!!