Hi. I cannot help being constantly tired. It doesn't matter how much I sleep, I will always be tired. If I go straight home after work, I always find myself falling asleep without knowing it. Also am always cold (especially my feet) and frequently have headaches. I am slightly overweight, but eating very healthily and still find weight going on rather than off. Don't know if this could be related, but every few weeks, I go for a few days with very bad back ache between my shoulder blades. Would be great to get some advice, I am covering for 2 people at work just now so don't have time for a doctors appointment. Thanks