Hello! On October 2nd, 3rd, and 4th I missed 3 consecutive Yaz pills in my third week.

On the 5th, 6th, and 7th, I took two per day and then on October 8th started a new pack taking one pill per day, and took one pill per day ever since (Skipping the white pills from my first pack and thereby intentionally skipping my period.)

On Thursday October 15th, (one week after starting regular one-a-day pills again), I had unprotected sex.

My question is whether or not I need to purchase a plan-B pill to prevent pregnancy since I missed 3 consecutive days and missed my period over a week before having sex. Today is the last day a plan-b pill would be effective.