Have to wait till 12th week to see obstercian!!!

I just got told by my doctor that the obstetrician he referred me to can't see me until I'm 12 weeks pregnant, I think that is absolutely absurd. I am so mad and worrying now, I want to make sure everything is going ok, I want to see one now, with my daughter. I already had three or four visits with my doctor and a ultrasound by 12 weeks. I know I shouldn't stress but it's hard. I recently lost the pregnant feeling and my symptoms are all gone, I had sore boobs, M/S and so tired, now nothing. I guess I should just be happy I don't have these things anymore but it scares me I'm 7w5d right now and just want to make sure everything is alright. I guess I could ask for a different doctor but I've heard she is the best at the hospital I'm going to give birth at.