Warning! contains tmi re: blood

I am only 4w4d pg. I started bleeding around lunch time today. It's not really heavy like my m/c was but i did have lots of cramps which have now settled down. It's mainly when i wipe but not heavy enough to leak onto my liner. It's brownish red but definatlely fresh blood.

I had a bt today with repeat test on wed to check hcg. My Dr also ordered an u/s for me to have tommorow.

My question is what do they expect to see on an u/s at this early (4w5d)? Has anyone had one this early and what did they see??
Also i need some hope, has anyone else had early bleeding and gone on to have a healthy baby?

TIA