MHW, I'm sorry to hear you're having trouble getting yourself in shape..I've recently started attending the gym again, I haven't been for the past 3 weeks cos of health problems, but I had been attending 2/3 x weekly since the end of May and hadn't lost even 1lb!! I haven't been doing weight training so didn't feel I was gaining muscle, however people who see me now comment that I look as if I've lost weight, even tho the scales tell me otherwise...
So, consult a dietician regarding any special diet for your condition, hopefully you will be able to adapt whatever diet you need to follow to your own preferences, and keep working out as much as you can, sensibly, and use a tape measure rather than weighing scales..don't try to lose more than 1 or 2lbs per week however, as that isn't sensible..
Good Luck!!