This can be one of the menopause symptoms because as the levels of oestrogen fall the vagina walls can get thinner, more alkaline and more easily irritated. I would suggest that you see your doctor just to make sure there really is no infection present. If you have had antibiotics within the last year or so this could be the reason. I would suggest taking a tsp of Molkosan Vitality twice daily, and a course of probiotics, and you may also find a phytosoya product helpful. Check with your local health shop for an appropriate cream to apply for relief and do the Kegel Exercises daily as this helps to increase vaginal lubrication and tones vaginal muscles. Google Kegel if you are unsure of the exercises.