Should my ankle sprain swelling have gone by day 5? Was only mild sprain could walk afterward, its just still really swollen and a little sore now.

Time, time, time. Ankle sprain swelling can take as long as a year to resolve. Almost never is it resolved by 5 days. The worst of the swelling typically resolves over 6 weeks. Do not let the presence of swelling cause you to restrict your activities. Instead, let pain be your guide.