Vaginal dryness. To orgasm. guide me.

I was diagnosed with lymph node tb in 2013. I underwent treatment for 2and a half years. My treatment got over in may 2016. During the treatment, my periods started getting delayed and I developed symptoms of pcos including hirsutism. I got an ultrasound which suggested that I may have pcos but I haven't visited a gynae yet. My periods are irregular and light . Lately I have noticed vaginal dryness which was not the case earlier. I am 31 years old, single and a Virgin. But I masturbate occasionally. I have been doing it for several years now. But earlier my vaginal area used to remain quite moist. With a little excitement, it quickly turned wet. But not any more. It remains dry even after I somehow manage to orgasm. Guide me.