What Causes Blisters Filled With Pus At The Base Of Penis?

i suddenly developed blisters filled with puss around the base of my penis. no prior symptoms. the Blisters seemed to heal, but then i developed burning sensation on my penis followed by itchy anus. then more blisters developed like 2 more and healed then an area next two previous blisters had what looked like clusters of the blisters. I also had frequent diarrhea for 3 days. all blisters healed and there was no pain aside from burining sensation on my thighs. I do have what looks like jock itch in the groin area, it's now brown color. Can this cause the blisters? or it is genital herpes? no flu like symptoms. the blisters came up without any prior warning.