Questionsame as i said above
AnswerHi Anton.
this sounds like your snake has some form of respiratory infection or cold.
you need to take your snake to a vet to get treatment and check the temps of your tank. they should be 84F in the middle with a hotspot of around 95F. also change whatever substrate you are using to newspaper for the time being. its generally cleaner and easier to keep clean and will help to aid the healing process.
i hope this helps,
Andy