I was diagnosed Bipolar and i don't actually have mood swings...ive had 2 manic episodes, after the first one I was diagnosed. I came off meds to go to a recovery program that did not allow meds, i left the program after 3 months but i felt fine and didnt get back on meds, but then June 2013 I had a severe manic episode that put me in the hospital for 7 weeks. Im not sure if you are bi polar, the sleep issues are enough to give ya mood swings! I use to take benadryl and melatonin to sleep. I would look into seeing a doctor though~Good luck with sleep Ive had sleep issues I know how hard it can be!