as a chronic insomniac, I've struggled years trying to find the right sleeping meds, and the only one that has ever worked for me is remeron. The only down side to it, is that it increases your appetite severely and has caused me to gain weight.. but it really does work to help you sleep. The only other med that sometimes helps me sleep is ativan but it's very addictive and not as effective if used for a long term period.

I hope you are able to find the right med soon and are able to get some sleep!