Can I Take Cyclobenzaprine With Melatonin After Which I Am Unable To Sleep When I Get Body Stiffness?

Hello there. I d like to know if I can take cyclobenzaprine 10 mg with melatonin 3mg. I go to sleep about 9pm and wake up at 4am. But can t fall back asleep at least till 6am. My body is stiff and hurts. So a Dr prescribed the muscle relaxers.