My toe nail has fallin off and have tons of unknowns form doctors

Patient: I have two questions I went into the hospital yesterday and the dr said I could have diabetes, skin cancer, or a foot fungus??Last night went to urgent care that doctor said it was my shoes??Im lost ….the first doctor put me on Hydrocodon and I took one and for the last 16 hours I have a extreme headache and thro up a few times…. I could use some help