Having repeated vaginal infections could be due to pelvic inflammatory dissease.You should be examined for that.Also check your blood sugar as diabetes
causes recurrent vaginitis
.The periods could be suspended due to you being perimenopausal and chances of any pathology can be ruled out by an ultrasound
.If the usg is normal then i dont think you should worry about that.Recurrent utis should also be ruled out.Get a urine culture.Hormones can cause the amenorrhea
but there shouldnt be pain.