Rysmommy, vent away, this is what this forum is for!
We all have some good days and bad days. Be proud that you have made the initial steps to becoming a healthy you. The first few days are always the roughest when starting out. I know when I started I was cranky, and feeling very deprived. I do not know if it is possible for you, but if there is temptation in the house, is it possible to get rid of it. I believe it was Dr. Phil that said in order to not set yourself up for failure is to make a safe environment for yourself, but I know that is not always possible, especially with family members. TOM probably does not help either for your state of mind. Keep at it, I know you can do it!