explain everything to the gp...see if he knows anyone...she may have contacts that you are unaware of...even if it might be a nurse practitioner. in some areas there is a real shortage of psychiatrists..i know where I am the hospital has been trying to fill a slot for over 2.5 years now.
if he will prescribe the meds for you that's a bonus. ect you might have to wait for a psychiatrist for.

just because dr's are in the same office does not guarantee they will all be of the same personality and practice. actually to be honest, you want them to be different...it offers the best options to patients...why have 5 dr's with the exact same personality and background when you can have a few different..not every patient respond to the same type of care...and erach dr may specialize in a different focus of treatment. it is unfortunate that this current dr does not mesh well with you. have you asked her why? when I had one who was not working well with me I did just that...I may not have gotten the answer I liked but at least I got an answer.

I do hope you find some help from your gp.