Need some input ladies! Any one ever experience this before ?

I have my first ultrasound at a womans center in my area today. I'm 6 weeks and 1 day along baby looked great. At the ultrasound the lady found another sac next to the baby and said it is a subchorionic hematoma. Now I'm scared to death after googling and finding out what that actually is. She never looked anything further into the second sac. I see doctor January 20th for my first prenatal visit as well as ultrasound with them. Any one ever have this before ???