Is it possible?

Hi mummies! I was supposed to know my baby's gender last month but was unable to as the staff said that my tummy was too gassy despite me not eating and only having a sip of water. This month I have the glucose test and Consultation only. I was wondering if it's possible to get another scanning as I do not want to wait until next month to know the gender. Or during the consultation wil the doctor be checking for the babby's heartbeat and isit possible to ask the doctor to check the gender as well? Thanks in advance!