Im about to get an oral filling?im clueless! tell me eveything!thanks?

my appointment is 2:30 october 26. im scared. i know notthing about a filling. i have to take demerol before. i tink i have to ge a numbing shot too but idk. pplleeeeeeeaseeee hhhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeeeeeeee…