Hello! I am on the pill - Ortho Tri Cyclen - I've been on it for a long time now (10+ years) but have only purposely skipped a period once. This past week I skipped it because I was on vacation - and the day before I started the new pack I took Plan B (had unprotected sex with my boyfriend and got nervous since we usually use condoms). I was able to skip my period successfully but I keep reading that breakthrough bleeding is common in this case, but I didn't have any spotting. I took a pregnancy test a few days ago and yesterday and they were negative. Should I be concerned that I didn't spot, especially since I'm on a combination pill?