PLEASE HELP SO CONFUSED

HELP!!! Please Ladies..

I’m so bloody confused...

So going by LMP (yesterday) I was

8 weeks on the dot.. I had an ultrasound yesterday & that showed 7 weeks but the report is saying 6 weeks ???

Good Heartbeat 140BPM...

GP said there’s nothing to worry about however She got me to take another blood test today to make sure levels are okay.. I’m just so confused 😐

Has this happened to anyone else ?? TIA