Sent a letter 5 days ago and it still didnt reach, is this normal?

on thursday i sent a letter from louisiana to chicago... it still didn't arrive, (it had $20 cash in it, wrapped in paper) is this normal for it to take this long or should i start to worry

they'll get it tomorrow.

dont worry it christmas stuff usally takes longer time time of year man wait to like tuesday nuttin then trip out my man and who u send it to a user on her or something if so they mit of took it from u and cashed it

thanks for the replies and no, not a user on here just a company