I was totally fine at 47, slim, active, a natural size 10 & happy. Then wallop, I hit 48 & gained just over 2 stone in one fell swoop - now a size 14/16 & with such a crushing, all-consuming exhaustion I can hardly move. I've never been like this all my life. I don't go to the doctors about it because they only fob you off. I swim every day almost but after that I could happily go to bed & not emerge until late afternoon. I'm so sick of it. How do I overcome this?