Was it safe?

I recently started back on my birth control pills. We've been relying on the withdrawal method successfully for a few years now. My period ended the day before I started my first round (I'm week and a half into that now) and my husband and I also had completely unprotected sex that day. I figured it would be fine since I was starting the BC the next day. The last few days I've been craving scrambled eggs and spaghetti like CRAZY! Is there a possibility I was ovulating at the time or are these cravings just part of the birth control???