hi sarah, welcome to the boards, and well done on starting your diet. Im into my third week and my mate started a week before me. She didnt have any sypmtons at all, no headaches, tiredness nothing yet i had them all only for the first week though. The headaches i think are part of the detox stage, your bodies flushing out all the toxins and the tiredness, your body is working harder to adapt to the diet and detoxing so it has to reserve energy else where hence the tiredness so in all it means the diet is working if you suffer these things but its different for everyone, some suffer, some dont. At the moment i do suffer from hunger pangs practically all the time but water helps a little as it did in the first week, it seems to quicken the process so helps, i also have bouts of tiredness still now i think im on my own with this as most ive heard only suffer this in the first week but any symptons you do get, mean its working so when im hungry i know the pounds are coming off. The end result is the weight loss so symptons or not, you know your doing it rite. On the plus side ive never felt so detoxed in my life knowing ive only got good stuff in me, its an amazing hit and when you reach the first weigh in youl be amazed at the loss, so welcome to the mad house, use the site as a life line, i do!!! and keep us informed on how u get on. xxx