Sciatica and pain Dam Back .. Help

Well, its like 3 months now. I have made little progress and i am really getting down and very sick of pain. Going to physio and still taking meds. Not so much during the day but definately at nite. Getting 4 to 5 hour sleep at nite and that is split up.I cant take much more of this and really dont know what to do. Getting very discouraged. BTW all the excersises taught/showed to me at first/ All Fuc#in wrong..........:banghead: what a waste of 4 plus weeks. Typing this on my knees because i still cant sit for more than a few minutes. Ever try and sit on the can being constupated because of meds trying to do what you need to and all you want to do is get up.........Sorry but this is really suckin