Hey Momma!
The first thing you have to do is give yourself a giant hug!!! You speak as if you are expected to be Superwoman. You are a human under a great deal of stress. Don't obsess on the days "cheat free", etc. Each day is a blessing and you are still doing wonderfully. You cheated, ok, move on, start again. BUT FORGIVE YOURSELF!
Also, if you have pms or are ovulating, the cravings are what got you to have that chocolate anyway. Love yourself girlfriend. Begin again. Beating yourself up only adds extra pounds. *hugs* Wendy