Mononucleosis Support Group
Infectious mononucleosis (also known in North America as mono, the kissing disease or Pfeiffer's disease, and more commonly known as glandular fever in other English-speaking countries) is a disease seen most commonly in adolescents and young adults, characterized by fever, sore throat and fatigue. It is caused by the Epstein-Barr virus (EBV) or the cytomegalovirus (CMV)....
Many of people who have had mono have body aches, from mild to severe.
My understanding is that after some time, it is no longer referred to as mono but as M.E/C.F.S and/or fibromyalgia (see the support groups) and body aches are one of the possible symptoms. Mine are in the tighs, especially the left one. Not as painful as yours it seems, but donlt worry I have other symptoms that more than make up for the "tolerability" of the pain in the limbs.
Look at the other support groups you'll see loads of discussions about body aches
Good luck