what your feeling is a psychosomatic placebo effect in which you want something bad enough your mind tricks your body into seeing symptoms. magick is cast with energy found in nature, while powerful, it must follow the rules of nature. no human can physically transform naturally therefore real magick cannot make such changes.
i suggest studying the basics before attempting another spell. you should understand how magick works, how to clear your mind [meditation] focus, visualize, how to control and direct energy, and circle casting before trying another spell. if you try to cast a spell without understanding the basics of magick, then you're really just reading off some paper, lighting some candles, and not much else.