My ob cancelled my appointment after 5 minutes!!

I'm BEYOND frustrated! I'm currently 36 weeks pregnant and about two weeks ago I moved about an hour away from my doctor.

Yesterday I was 5 minutes late and they cancelled my appointment and told me to reschedule. I drove an hour just to be told to go back over 5 minutes.... They seriously couldn't check my daughter's heartbeat because of 5 minutes!?

I dunno if I come off as bitchy or not, but it seriously pissed me off.