Is Taking Two Tablets Of Mercilon On Same Day Safe?

Hello! I have a question about birth controll pills. I forgott to take my pill (mercilon) yesterday, and remembered it today, 22 hours to late. After reading in the mercilion-information-thing I thought that because I am on week two I should take two pills and be safe, so I did. The problem is only that I scipped the menstruasion week last time, so I'm really on week 5. Their information says nothing about week 5, just week 1, 2, 3 and 4. What should I do?