Concerned owner

[Cealym]

I'm new to the site and iv joined because I have some concerns about my 4 and a half foot charcoal corn snake. My first concern is that he has not eaten in close to 6 to 7 weeks. I know snakes can go a while with out eating especially before and after shedding but he shed a while ago and still isn't eating. My 2nd concern is that he has a black spot that has just appeared on the tip of his nose. I checked over the length of his body and it only seem to be that one spot that an "extra" spot has appeared. I'm starting to get to the point were I feel I may need to take him to the vet but I wanted to ask on here first to see if there are any suggestions I could try because the nearest reptile vet in my area is a few hours drive away. Please help.