Foot still swollen after a few day's. no discoloration, pain. what?

? still swollen: Your question suggests that perhaps you had some trauma and you weren't surprised it was swollen. As we get older, swelling can develop even without trauma due to vein or circulatory problems. If only one foot, ? vein/lymph obstruction. Without pain/discoloration, infection unlikely. Elevate your foot as much as possible and if it persists, say another week, see your Doctor for evaluation.