F.A.
I think this is fairly common, though scary. I had early bleeding with both of my pregnancies and went on to have healthy babies. If things are progressing well on the sonogram you can take a lot of reassurance from that. With my first baby, I bled around 8 weeks and then had a normal sonogram, and they told me that if you have a normal scan at that stage then your chances of your pregnancy going to full term are 98% which is pretty good odds!
I hope it all works out for you.