I have been on birth control for three years now. Recently, I missed the last two pills in my birth control back. My period came early. Instead of starting the next birth control pack on the scheduled Sunday, I took it on that Monday. So this means, I missed two pills and started the birth control pack a day late. After starting the pill pack on Monday, my boyfriend and I had sex 5 days later on that Friday. We did not use a condom. Is this considered unprotected? Should I take plan b?