the guys on here are giving some great advice
try soaking and massaging the area in warm salty water it will help start drawing out infection . then dry the area thoroughly and put on neosporin- ive not had to try neosporin on my snakes but the peple on here swear by it and they have a lot of experience.
As for the warm salt water thing, i hate hospitals and treated myself with that method after i got a secondary infection after a nasty cut i got from some rusty metal. used the method on my dogs and my python.