go visit your doc, ask for a 7 day prescription sleep aid like ambien provided you do the following to a T
1- once you committ yourself to sleep you can't do anything else but sleep
2- don't use your bed for reading or watching tv or lounging or snacking but just for the act of sleeping
3-if you find that you aren't sleeping and shifting to left or right, get up and do something else, elsewhere and come back to bed only when tired
4-wake up and sleep at the same time every day.. I mean even if you try for one night and end up sleeping only 3 hours then so be it, so long as you wake up at the time you assigned yourself.
5-don't eat anything after 8 in the evening
6-do some light exercise
7-seriously don't neglect tasbee7 (using sibha) reciting suras or listening to Quran.
stick to this plan with no interruptions and let us know if it worked for you
fi aman illah