I am on Ortho Tri-Cyclin and have been for over two years. The past few weeks have been rough and I haven't been taking my pills regularly. My boyfriend and I don't use condoms and he has never ejaculated inside of me, until yesterday. I wasn't home and didn't have my pills, so I didn't take one afterwards. My last period ended 5-6 days ago. I'm not sure if I could be pregnant since I have taken pills, just not regularly. I know the chances are probably high, but I was really unsure since I missed my pill the night he ejaculated inside of me. Is it likely that I am? Should I take my pill today? If there is a chance I don't want to harm our child by taking them. Also, when could I take a pregnancy test?