Bringing up a second topic at the doctor

I'm going to the doctor this morning to get my birth control refilled and that's all that they are aware that I'm doing today. However I really want to bring up my anxiety especially since I had a panic attack last night because I have to go to this appointment alone (fiancé has to work). Is it rude of me to bring up a second topic while I'm there? And how would I bring it up? Also, do they always run tests on you to eliminate the possibility of physical issues? Because having blood drawn freaks me out and also costs more at my doctor's office.