Vaginal dryness at your age is not unexpected as it’s a part of menopause, or peri-menopause if you’re still having periods. When you say “nothing works” have you tried artificial lubricants? They should work fine. Hormone Replacement Therapy might help you resume your natural lubrication, but there are risks associated with that for of treatment. On the other hand there are methods of replacing the hormones only to your vagina, so that you will resume lubricating but could still get hot flashes and other symptoms of menopause. The hormonal dosage is much smaller, and so therefore so are the risks. Talk to your gynecologist about that. But you don’t need a prescription for artificial lubricants, and they have no risks, so my advice is to try using one of those first.