I have a friend who is a carrier of mono but didn't show symptoms just a small flare up.. Well some how he passed it to me! So I have had mono sense April and it's now July! It's miserable
In general you can never get the same virus twice as your body builds up antibodies to it. I am unsure how many strains of the mono (epstien bar) virus there are though.
I believe you can, although it's rare for a reoccurance. You could load up on your vitamin intake, maintain an extra healthy diet, just to keep your immune system running at its maximum. 2 weeks with no symptoms, I wouldnt worry about it. I think you would have it within days, at least I did (within 3 of exp).