Ortho Tri Cyclen Lo - Late Period, help?

since she takes her pill at the same time every day and you put a condom on, you guys should be fine. she's only been on this type of pill for 3 months, so her body is still getting used to it. i'm actually on the same kind and for the first 2 years i would always get my period on a wednesday but now i can get it on either thursday or friday. give it until sunday before you let your nerves get to you but i'm pretty sure everything is good :)