Just letting you know I had no heart beat at first ultrasound with this pregnancy when I should of been 6-7weeks but was told to go back in two weeks thinking that all would be bad as I had some bleeding but nope there was a good strong heartbeat on the second ultrasound! Good luck it's very nerve wracking, I would opt to have another ultrasound in a week if you still get no heartbeat on Friday just to make sure.