Might need a plan B ?

Ma

I need some serious help ladies. So, i finally got my birth control pills on monday. I have been taking them since so I have been on the pill for 4 days. So my boyfriend and I had protected sex until he realized that the condom broke, then we decided that we might as well continue sex and just have him pull out. We are planning on getting a Plan B. I just need to know if it will mess up my birth control. I am sure that my birth control isn’t effective until i’ve been taking it for over a week. Any advice helps.