thanks for using HealthCaremagic
I would be pleased to answer your question .
If you have had a broken toe
4 weeks ago and presently if it is red swollen and has a blister
, I would suggest you to take good rest , apply ice , show a health care specialist like an orthopedic doctor . There might be an infection which if not treated can result in complications. So i would suggest you to visit the doctor so the doctor can prescribe you the necessary antibiotics .
Thanks and Take care