Congrats on your pregnancy! I have no idea what the normal HCG levels are, I actually never have had them checked this pregnancy. I found out at 14 weeks I was having twins after seeing my midwife and her telling me I was huge for 14 weeks and should have an u/s to see if it was twins. The second they put the thing on my belly you could see both babies in their own little sacks. How do you feel? I knew that I was having twins I just didn't want to admit it to myself. I really was not ready to have 2 more babies at the same time, but after a few weeks of adjusting it is really exciting. Being a parent to twins is something that not very many people get to experience and even though I am sure it will be really hard, it will also be so much fun. Good luck at the u/s, I hope you have the outcome that you want & that is great that the spotting stoped. Let us know what they say.