Changing start day

[criswithnoh.livejournal.com]

I apologize as I know this must have been asked a million times but I googled, searched on VP and vulvapedia but couldn't find a really satisfactory answer. I was wondering how to change the day I start a new pack of pills. I'm a first day starter and I started taking my pill on a Wednesday but want to switch to Sunday. I'm 2 pills away from starting my placebos so do I just shorten the placebo week and start a new pack on Sunday instead of next Wednesday? That's pretty much what I could gather from what I found. Are there any side affects to moving days? My pregnancy protection wouldn't be compromised, correct?

Thanks!!

Forgot to mention: I'm on a monophasic 21/7 (last pack of Apri, switching to Ortho-Cept on this next pack), in case that makes a difference.