I've been on Ortho Tri Cyclen Lo for about 4 years now. I've been very good about always taking it on the same time and I've never missed a pill. I've skipped my period a couple of times before, as approved by my doctor, and never had any problems. Although, this time I'm having a little concern. I skipped the placebo pills and went to a new pack as I always do, but I'm on the 10th day of the pack (light blue pills) and am now experiencing breakthrough bleeding. I've never had this issue before and did feel a few small cramps as if they were menstrual cramps. Is this normal? I usually take my pill right on time, but there were a couple days that I had to take it an hour after or an hour before. Could this be a sign of pregnancy? Or is my body just reacting to the sudden change in dosages from skipping a period?