How does be work?

Lauryn

So, I’m 18 have been on birth control pill for about 6 months, I usually take it regularly but sometimes I miss a day or two. I missed 2 days in a row the first day I had unprotected sex. Does the pill cover even those days or should I be worried? This is my fertile week too 11% pregnancy rate <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> says.