I never felt right after I had mono either.

I'd get tired a lot easier than I did before the mono. Seemed like things that I could do before the mono were so much harder afterwards.

I had mono in late 1995 and early 1996. (started feeling sick in November, was flat-on-my-back-sick from late January till mid February...didnt feel well enough to go back to work till late March)

It makes me wonder if in some people, mononucleosis might trigger MS, or an indistinguishable-from-MS type of illness that only affects certain people. Since some people can have a raging case of mono and not have any weird aftereffects.