I am on birth control, but missed a pill in week 1 and in week 2. I took them both the next night as a makeup. Then, 3 days after my missed pill, on day 17 out of my 28 day cycle, I had unprotected sex. But he was only in for about 10 seconds or less unprotected. And he pulled out. Then, less than 24 hours later, I took plan b. What are the chances I am pregnant?