I Am 51 Y.o., Male Hispanic. A Friend Of My

I am 51 y.o., male Hispanic. A friend of my wife is a nurse. My wife told her my symptoms. I got sick in Mar 2015 with prostate infection and enlarged. Since then I lose energy making meals, I get tired half way through meal, etc. I have lost muscle mass in both arms and legs. I was weighing 180 now I'm at 218. I recently had biopsy on prostate all cleared no cancer. Still don't know why I am losing energy.