I assume you won't see much.. I had early bleeding with my last pregnancy and I had 3 US in the first 12 weeks due to that.. At our first Us which was 5 weeks ?? days ( can't remember now) We saw a fetal pole and sac ( i think thats right) and the tech thought she saw a flickering HB but wasn't sure so we were booked in for the follwoing week..

Good Luck tomorrow..