hello im a 23 year old male, ive been feeling weak, fatigue, dizzy, headaches, leg pain joints etc.for almost four weeks and its not getting any better. ive been to the doctor almost three times and ive been told blood work looks good that it may be depression anxiety i am going through alot right now in my life but i hav alwys dealt with those things and this has never happened to me i feel like im going to die and im in constant pain every day and i feel like no one believes me. what could this possibly be??