20 week anatomy scan concerns


Had my anatomy scan done today but baby girl was being stubborn and was tucked over with her head in. The tech couldn’t get her measurements or see her private area.

I have to go back in 4 weeks to repeat. They’re going to have me do the glucose test and drink the glucola this time before. I didn’t have any sugar before appointment or much to eat. Could this affect babies movement during the scan?

Did anybody else have this problem? Was everything okay? Also, doc said her heartbeat was lower than usual which kinda scares me. Any suggestions/tips for next anatomy scan?