Pee all night?

I have had this problem for about a year now, I gat up atleast six times a night to pee and then I can't go back to sleep. All i drink all day is decaf tea, water a little milk now and then. No sodas at all and i don't typically drink much after 8:00. I have been going to a urologist now for a few months and after trying many medicines, I am now on a anti-diuretic hormone and sleeping pills. I take a total of five pills a day and It made it that i don't go twelve times now just the six. The medicine is very expensive and I am still up at night. I don't want to get addicted to sleeping pille either but he has me taking two every night. The worst part about this is that I am only28. Any help or advice please!