Boy don't I know what the deep heat of the south feels like--- I'm in Houston texas which is gah, SOO HOT!
But hun, if your doctors think you have it...then you very well may have. Have you stop to think that maybe you might be in denial? Has any of the 'fears' seem huge now (thinking about eating food), any irrational thinking patterns? Try the EAT test (online eating disorder test), if anything research up on it because chances are--- you might be in denial or not yet recognizing an on-set of a problem.
Try and get a handle on this before it gets out of control...can you imagine yo-yo weight (lost & gains of 50 pounds over and over) due to refeeding & then getting out--starting over etc? Can you imagine health problems even worse than what you have (trust me they get worse and so bad that you probably may not come out of it alive-- I ought to know). It might help to seek some professional help (2nd opinion) from some specialist that deals with Eating disorder and see what they have to say. Go with an open mind and learn from this.
Check this site out... this kills me everytime & my friend is on there right now
http://www.somethingfishy.org/memorial/memorial.php
good luck & god bless
jenny