Hello, can you tell me if there's a possibility of a 3-week break in t…

Hello, can you tell me if there's a possibility of a 3-week break in the schedule, given that it's already been 5 weeks since the last period and an ultrasound from last week said about 2 weeks! And they told me to come back for another ultrasound in two weeks to listen to the heartbeat... Is it possible to see a gynecologist? Can they prescribe tests?