On Birth Control Pills. Had Unprotected Sex, Missed Pill, Took Next Day. Plan B Pill Required?

I have been on birth control for 3 months, i missed a the third pill of the first week and took it the next day with the other pill on schedule. but the following the day i missed it and that day my bf decide to ejaculate in me. but i took it the next day following the pill on schedule. It is three day since then.. I have been taking the pill on time. do I need to get a plan B pill?