Hmm so you haven't tried the latest and good sleep meds like Lunesta and Ambien CR? I think 2 weeks on one of them would let the doctor know if you need more than to be self medicating with benedryl! Maybe rotating two sleep meds, one one week, one the next (nightly, of course

) would keep your system from building up a tolerance?
I do have something to help sleep. My MD had to be RE educated ? about PTSD and sleep disorder but she "saw the light" (please turn it out so I can sleep!) and doesn't give me much grief about the script each month now at all.
There are good herbs ( used them before I got a sleep med) Valerian, Passion Flower are 2 common ones, but there are many more... ask your Dr about taking something like that. (My MD is educated in herbology and she is the one who told me about them!)