The little bit of blood will be from the scan, I'm sure. Are you close to a hospital hon? Remember if all else fails you can call an ambulance and just unlock the front door. Are any of us Bub HUb girls close to you? Or do you have a friend you could call to spend the night? I shudder to think of you being alone when you're feeling so upset and worried about bleeding.
FWIW I don't think you're going to be that unlucky. The likelyhood of two bleeds like that have to be slim. But for reassurance and peace of mind you might feel better if there was someone with you other than your DS