If you're eating enough calories during the day, then it's not hunger, so be sure you're having enough. Also, have you increased your caffeine? Sometimes, in an effort to shed weight, people drink more tea or have more coffee as a way to keep cravings at bay. Be sure not to consume anything of that sort after 12 noon. I don't really have any other answer. Maybe it's like withdrawl? Maybe your body misses some of the foods? Have you eliminated or drastically decreased carbs? Either way, hopefully you'll get used to it soon and get back to your normal sleeping patterns. If nothing works, maybe take a hot bath prior to going to sleep? Maybe you could do things that help you to relax more. Just a few thoughts...not sure if any of them are useful.
First goal: under 180: 3/4/15
Second goal: 175 or below: 3/24/15
Third goal: 168 (no longer overweight):
Fourth goal: 161 (what I weighed before I fell off):
Fifth goal: below 160:
Final goal: 145-155: