Yes you should. Cocaine stays in the system 3 days. With frequent or chronic use, can stay in the system 5-7 days.
I Snorted Coke 5 Days Ago. Will I Pass A Drug Test?
You are right on the border if you will pass the drug test or not. It usually takes 3 days to get out of your system depending on how much you did. If I were you I would play it safe wait a week if you can, otherwise it will be luck of the draw.
You will be rather lucky if you pass