Dear SuzanneB: I am assuming that there is no noticable skin irritation that you can see. If there is, you might have your doctor take a look. If there is no visible skin irritation, you might observe for another cycle and if this continues, make an appointment to see your doctor.
ItchingCauses of vaginal itching
Eye burning - itching and discharge
Itching
Jock itch
Muscle twitching
Vaginal itching can be a symptom of some types of breast cancer but it is not usually cyclical and is usually accompanied by skin irritation. Of course, you can have skin irritation and itching from many other benign conditions (eczema, for example) as well.