Hi Bex,
Firstly welcome and I hope you get your head around this diet quickly. There is a thread called 'bring your head inside'... look for it and read it, it may help. This diet is as much about your state of mind as it is about the state of your body, you cannot do it if you are not committed to it.
You will continue to have hard times unless you do it 100% and totally abstain from food other than what the chemist gives you in the form of shakes, flapjacks and soup. If you eat on this it is another day longer to get into ketosis, therefore a day longer feeling hard done by.
This is my 10th week and I haven't cheated. I have 3 small boys, cook for them each night and at this stage I don't even think about it, it is a job I do, like washing or brushing the floor. You will get to that stage too but only if you allow it to happen.
I wish you al the best and hope that from now on, not tomorrow but from this moment on, you feel dedicated to yourself and the journey you are taking on LT.
Good luck.
Doirin