What Causes Changes In Body Like Odor, Discharge And Appetite?

I have lots of changes in my body what can it be? Such as change in Odors,
Change in likes & dislike in food, Insomnia itching belly, lots of acid reflex, mood change,
change in hair (static), increase in sex desire, increase in discharge, increase in appetite,
increase in urinating and lots of Headaches. I already toke a pregnancy test and its negative. What is wrong with me?