For about three weeks I've been experiencing itching in the clitoris area. I haven't had any burning during urination no abnormal looking or smelly discharge, no bumps, rash or anything of that sort as of yet, but I'm afraid I may have an STD. I only had one sexual partner the past 2 years and he complains of nothing wrong with him. I last had sex with him almost 2 months ago now. I have also had a change in menstrual cycle, my blood is darker and i usually would get it on the 25th day of the month and now it comes on the first of the month. I don't know if it has anything to do with it but I had my daughter 16 months ago. Is it possible I have a yeast infection even though my discharge is normal? Could someone please tell me what this may be? Thank you!