Marle,
Don't know about the sleep meds, however, you can reprogram your subconcious mind by feeding it a positive thought every night right before you go to sleep. The subconcious mind will feed the though to the concious mind and after a period of time, the concious mind will believe it, and it will become a reality. Must fee it the same thought above and over again for a period of time before moving onto the next one.
I hope the meds help, take care,