Missed birth control. Unprotected sex.

For the last two weeks I've been horrible about taking my birth control. My (ex) boyfriend and I were having some issues and split up and I just haven't been worried about it.

Well, over the weekend we spent a night together and one thing led to another and we had sex multiple times and it was during my "fertile window." I told him ahead of time that I haven't been taking my birth control correctly, yet he still came inside me each time.

Is this something I need to worry about? And should I continue taking my birth control as normal? I missed almost an entire week straight.