Please have a vet see your snake A.S.A.P. Make sure it's a qualified exotic vet whose practice regularly includes snakes.
https://arav.site-ym.com/search/custom.asp?id=3661
How are you housing this snake? What kind of heat equipment? How is it regulated? (thermostat???)
A photo of your set-up & details would help, but right now it's more important that you get him some medical care. Now.