I'm worried because my sleep pattern is messed up! how can i fix it, what do you suggest?

Make changes: So you want to work on what is called sleep hygiene and stimulus control first before drastically changing schedule. Then typically sleep specialists are going to recommend you keep a log/diary about your sleep first and work on fixing it. I typically recommend first avoiding electronics of any kind 2 hours before planned sleep and consistent wake up time regardless of bedtime. Good luck.

Sleep hygiene is key: Retire & rise same time each day. Keep bedroom dark & cool & use only for sex & sleep. Turn off tv. No naps. Exercise regularly but not in late evening. No caffeine for 6 hrs & no alcohol or tobacco w/i 2 hrs of sleep. Keep dinner moderate sized & finish at least 2 to 3 hrs before sleep. Can try warm milk, along w light reading or warm bath.