I am on Ortho Tri Cyclen Lo and I had sex on Sunday night, but then forgot my pills on Monday and tuesday. I have been having symptoms of pregnancy, but am not sure if maybe I am just having premenstrual symptoms. Cramps, backache, tiredness, and nautia. It would be too early to tell if I was pregnant for atleast another week or so. Anyone have any advice for me?? Do you think I am already pregnant? I take my pills around the same time everyday but the last month or so, I have taken it a few hours past when I shouldve.