Five days ago I began taking Ortho Tri-cyclen Lo (I have taken them perfectly, at the same exact time every day, if that makes a difference), the first Sunday of my period, and today mid-coitus with my partner, we took off the condom and went at it without it for about a minute before I stopped him and I made him put on a new one. My doctor told me that the pill would not be effective until after a week so I was wondering if I should take plan B because I know about the whole pre-cum situation. Also, will taking plan B effect me negatively while on the pill? Thanks in advance.