Pregnant, ultrasound?

I work long hours M-F and don’t have any sick days until the end of May. I’ve called all the local clinics and my OB no one has hours around my job. Can I just go to a urgent care and ask for a confirmation ultrasound to ease my mind until my OB gets me in? I have a history of ectopics & miscarriages so I’m really on edge here.

Update: I’m 6 weeks, no one has weekends or hours available I cannot leave work without losing my job.