I have been taking clyndomicin since 3/25 and prescribed to take it for 10 days for my absess in mouth. I left my bottle at my girlfriends and can't get it till tomorrow night, which will be almost 24 hours, and I had one pill left to take of my dosage. What could happen? Is it not going to be as effective? I have to get a rootcanal Thursday 4/7 so i'm curious and I have class all day tomorrow so I am asking here. I was prescribed this because i'm unsure if i'm allergic to penicillin. thanks.