I am supposed to start a new pack of birth control tonight (Sunday), but I do not have the pack with me. Will it be OK to start tomorrow on Monday, if I double up?

I use birth control as well, Mine is called Yasmin. If you miss your pill on Sunday, make sure to take 2 pills the next day at the usual time that you usually take them. Take your Sunday pill And Monday Pill on Monday, I had to do that once

I use Ortho Tri Cyclen - and the directions are the same. If you miss a pill, take two the next day.