Ovulating?

[lostcause83.livejournal.com]

So, I'm in my second week of my pillpack (Kariva, generic of Mircette), and I take Saturday, Sunday, and Monday's late. (Late as in before the 12 hour time frame, not after it) My period ended exactly 14 days from Monday. (Friday is my start date). Is there a possibility that I ovulated yesterday or the day before? I felt some abdominal cramping on my left side. I'm really paranoid now.

If so, do I need to use back up for the rest of this month?