Needing advice!!

Alyson • ♥♥2/8/15♥♥ :)
For the past 3 to 4 months I have been burning constantly, it comes and goes cold stuff helps a lot when I sit it hurts even worse the time I get relief is when I'm sleeping, I went to three different they couldn't figure it out they took std tests all negative I went to a urologist they said my hormone levels aren't where they need to be because I was previously on all different types of birth control well the burning went away and it's back isn't getting better!! Has anyone ever experienced anything like this? Or maybe have answers.?