I would wait until the book another scan. I had a can at 7 weeks as they thought I was having an ectopic pregnancy
. The scan showed th sac was in the right place but could not see anything inside I as told to go back a week later and they could then see embryo. I now have a healthy 3 month old daughter. They can maybe do an internal scan which is meant to be a lot clearer than an ultrasoundl I turned is down as I heard it can make the risk of miscarriage
larger I was later informed that this was rubbish. I hope everything works out for you.