What Causes Vaginal Pain With Itching And Burning?

Hi, I am taking daily 40 mg of citalopram and 10 mg of diazepam at night and 5 mg in the morning. I use to also take 150mg of wellbutrin XL to help me quit smoking. I took Wellbut rin for 3 1/2 month and quit taking it a week ago. I have not smoked since February 1st of this year but I keep on getting viginal pain, burning and hitching. UTis as well. My last paps was normal, no yeast no bv, but still have this awfull constant vaginal burning. Canit be related to the above mentioned medication or peri menaupose simptoms or what else.. Thank you for putting me on the right track.