What is wrong with my va jay jay?

Ok for like the past month my va jay jay, taint, and have been very dry and sore. I haven't been ually active in over 2 months so I know that has nothing to do with it. And I know it's not an STD because I've only been with 2 people in my entire life. I do shave that area every 2 days or so. Could that be causing the problem? Also I wear thong panties but I have been wearing them for 6 yrs and have never had a problem with them. Any ideas on what the problem could be and how to alleviete the soreness and dryness??