Did you ever forget your calculator for a CFA exam, but only realise when you were at the exam door? What did you do? Wing it? Try and go back home? Beg someone for their second calculator?
I brought two calculators to my lvl1 exam. Was asked by a young lady if she could use my back-up since she had forgotten hers. I said no and felt like shit.
You should probably lay down and rot boyo. There’s three things you have to take with you - pencil, calculator, passport/exam-ticket (I bundled the last two). You probably aren’t ready for the exam (much less to manage client dollars) if you can’t remember that one significant thing.