Suggest Treatment For Blister On Finger After 2nd Degree Burn

I was at work (a restaurant) today and received a small 2nd degree burn on my pinkie finger. It is about 1-inch in diameter at its widest point. The burn is located at the first joint in the pinkie finger. The incident occurred about 12 hours ago and now the injury has formed a blister that has swelled in size (with pus, I believe?).

What should I do to care for this injury?