Hi, thanks for posting your query
The bee sting
occured 4 days ago and it has started looking bruised which indicates that it is healing and wont increase further . You are taking apropriate treatment for it so it seems that it will go away within a week or two.
In addition you may apply a soothing lotion like calamine
twice or thrice a day.
But if the redness
or itchiness or pain increases you may visit a doctor
Hope this solves your query