Before to start any weight loss program you need to talk to your Dr.  I too made the decision to lose weight and It caused me to feel so compulsive that I gained 5 lbs. in 2 weeks.  I went to see my doctor and before we started anything he did a full blood workup on me to see if anything medical was going on.  Well my thyroid was not working like it should.  My blood pressure was up because of my weight gain. and Stress was causing me to eat compulsively.  He was able to help me with Rx medications.  One for the thyroid, one for the BP and one, a short term medication to get my compulsivness under control until I could get myself together.  I have to go back to the Dr. once a month to get my vitals checked and the medicine is only for short term use, but so far it is helping.  Since February I have lost 17lbs. and I am starting to feel less of a blob on the couch to more of a happy person who wants to go out and do something.  I have done this only with food choices and no eating after 8:00pm.  Breakfast is your best meal of the day and pop is not your friend.  Most people just say eat less and exercise.  That is good, but you also need to see if something medical is going on.   Hope this info helps.