Payments

So I didn't watch what button I clicked on when paying my current bill. I accidentally clicked pay now and I meant to hit payment arrangement It was suppose to be posted the 10th and it sent me a email for it to be a bank draft so I'm guessing if i do not have the current amount of money in the account to pay this will the bank decline the payment? I may call them in the morning just in case. Whoops.....I feel very dumb.