sickover
The feeling you get after you recover from being sick, but you still feel like shit, yet show no symptoms of the disease.
Person 1: Hey man, you down to have a kickback at your place tonight?
Person 2: Not tonight no, I just came off some crazy fever, and am feeling a bit sickover.
Person 2: Not tonight no, I just came off some crazy fever, and am feeling a bit sickover.