9weeks turned into 6weeks+1

So my orginal due date was febuary 9th based on my last period. So I'm very impatient they made me a ultrasound appointment for Jul 27. But instead of waiting I paid for one from a ultrasound place and she said I was measuring at 6weeks and 1 day. She couldn't find the heartbeat but saw flickering and seemed confident I was just to early. So now I have to wait till the 27th to see if the baby has a heartbeat so my new due date is March 1st