i have mono as we speak. ive had it for two weeks now, but im finally feeling well enough to go to school on monday. i went to the doctor and they told me the same thing about the spleen, but i dont think you'll need to wait three months. once your symptoms go away, wait about a week and go see your doctor again. have them check your spleen and liver to see if theyre swollen at all. you should be fine.
and btw, the thing that got rid of all my symptoms was prednisone. ask your doctor for some i guess.
also btw, did you get tonsilitis from the mono? i did. it SUCKS. but the prednisone helps, along with 600mg of ibuprofen every 4-6 hours.
good luck dude, and id like to hear your thoughts on the matter.