Can any doctor in sweden help me find out if i have sporadic fatal insomnia? i am pretty sure i have this diease

Hopefully not!: I would start with your primary care physician. Hopefully your self diagnosis is in error. Fatal insomnia is an extremely rare prion disease, and you are also about 10 years younger than the reported onset for the sporadic form of the condition and 25 years younger than the average for the familial type (of which I am aware of only cases in germany and spain).

Pretty low chances: Per: https://rarediseases.org/rare-diseases/fatal-familial-insomnia/ - "Sporadic fatal insomnia (SFI), is extremely rare and has only been described in the medical literature in about two dozen people. " I have not seen any reports of cases in Sweeden. FFI cases have been seen in Germany, Italy & Spain.