Twin or Subchorionic hemorrhage

Vanessa

I am about 6 weeks pregnant and at my doctor's appt, I was told they could see one baby for sure but the doctor also saw something that could either be a twin or blood that looked like another sac. After, doing research I am assuming it could be a twin or a subchorionic hemorrhage. Has anyone been told something similar? I have another appt this Friday but, I have been just worried.