Sleep Glorious Sleep

My body has always been the type to require a lot of sleep and if I don't get enough sleep I either get sick or get a migraine. I need at least 8 hours of sleep a night to function during the day, unlike my sweet husband who pre-diabetics could get by on 5 hours of sleep a night. Well the past month sleep has totally escaped me. I can be dead tired and go to bed at 10:00 PM and will be wide awake by 1:30 AM. I have gotten where I dread bedtime because I know that I will not be able to sleep. I have tried taking a warm bath before bed, lavender on my pillow, last night I even took two Tylenol PM before I went to bed and I was awake ALL night long. I would love to go to bed and be able to sleep for eight hours straight! Any suggestions?