New and need help due to chronic illness

Hi, I'm a 39 year old female, UK-based, and I have post-viral fatigue syndrome. This means that whenever I get a bad cold etc, it takes me many weeks, sometimes months, to recover. I have symptoms of chronic fatigue, confusion, an inability to concentrate and - oh, the thing that's causing me real issues at the moment - muscles that ache like I've run a flippin' marathon when I've just walked round Tesco's! It's made worse by exercise, so the gym membership's currently dormant - I'm only just managing to work part-time as a teacher. I really need to lose weight as I'm at my heaviest ever of 13 stone and I'm only 5 ft 3. MFP has set me at 1200 calories a day but I need to keep my strength up and sometimes, I admit, I'm turning to sugary and fatty foods to give myself the short-term energy I need to work and look after my children, one of whom is autistic and needs a fair bit of emotional support day-to-day. I'm a cheery soul really, but this does seem a little daunting - I've had eating issues all my life. Any help gratefully received and I will reciprocate as far as is humanly possible, I promise.

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