A regular run of the mill MD won't be able to identify hormonal issues; you need an endocrinologist, someone who specializes in the field of hormones & metabolism. Not eating is the worst thing you can do. It fucks up your hormones, brain activity, and metabolism. On top of that, it will cause your body to cannibalize itself just to stay alive, eating away at not only your fat stores but your muscle and bone tissue as well. Simply switching to unsweetened tea, or at the very least artificially sweetened tea will do wonders, as will cutting out as many sweets as you possibly can. I have relatives who did nothing but switch to unsweetened tea and have shed dozens of pounds.