All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad, ﷺ, is His slave and Messenger.
You are not obligated to make up any of the prayers, because the default ruling [in your situation] is that your obligation has already been fulfilled, and because several scholars held that one who abandons the prayer, or a condition or pillar of it, out of ignorance is not required to make it up. This is the view adopted by Shaykh al-Islam Ibn Taymiyyah, and it is permissible for you — being one who suffers from waswas, as you mentioned — to act upon his view in particular. Going forward, you should determine dryness by examining the outer part of the vulva, which is what becomes visible when sitting to relieve oneself.
Allah Knows best.