Questioning my OB choice

So I thought I was being very thorough with checking and choosing the  Right OB. The one I chose in my area had the best reviews out of the choices. Anyway, I had my first appointment on January 13th. Since it was my first time there of course they had to get my history and such but I asked if they would need a urine sample and they yes and let me give it to them... This was before they took me back to get my vitals.
After getting in my room I waited an hour for her to come in and she never mentioned anything about the sample I gave and I thought they would do other stuff like take a blood test or something to that nature. Anyway, the only other test that was taken was I guess my blood pressure on breathing... I stood on a piece of metal and inhaled deeply hooked up to the blood pressure monitor. 
She told me I would be 13 weeks the next day... I'm now I'm 15 weeks... She canceled my sonogram the following Monday and rescheduled me for the 27th. I got a call after that rescheduling saying that they didn't have the equipment at the facility to do the ultrasound and scheduled it for the 9th of February so I asked about my sonogram and the receptionist said that's what I was scheduled for on the 27th and that's what we were rescheduling again.... 
So I'm a little upset, everyone is posting their baby pictures and I haven't even seen mine yet and so my question is, should I find another OB?