I know i went thru the same thing. I am 5′6 and 105. went to dr and he is checking thryoid and celiac disease. I can skip a meal and lose 5 ilbs. I hate this. Would love to wear shorts and bikinis but get called names like skinny legs or ask me if i am sick!!!!!!!!!!!. wish i could help…it is getting scary. oh yeah they want to do a colonscopy to check for cancer so i do needs prayers.