Am I jumping the gun?

I am 22 weeks pregnant, and I was supposed to find out what we're having today. Well, I went all the way to the doctor just for them to tell me that they didn't have me scheduled today for an ultrasound. Mind you, I've been waiting for a MONTH to find out, I've been ecstatic, and impatient. The doctor comes into the room and starts in with this attitude for the messup. I'm crying because, duh! I'm pregnant and emotional and DISAPPOINTED! And ALL he can say is "we'll reschedule you". I've been wanting to change OBG's for the past two months, because I just don't see having such an insensitive person like that deliver my FIRST child EVER. Am I being to worried?? Or do I have every right for feeling the way I do? He never listens to my worries, I don't even know the heart rate of my baby, my belly measurement, or anything. Every time I try to ask a question about a legitimate concern I have all I get is "I don't know, I can't tell you". Would you be able to have this person deliver YOUR child??