Recovery stage of mono. My blood looks good & my spleen doesn't seem to be enlarged. When can I start lifting? Can it become enlarged in acute stage?

Wait. The spleen is usually enlarged with infectious mononucleosis (barr epstein virus infection). The spleen can rupture if there is trauma to the spleen when it is enlarged. Lifting of course depends on the weight of what you lift. Give your body time to heal and the spleen to return normal size and this may take 3 months.