Lutera; finished first pack. No problems. Missed first two white pills on week one. Due to the pharmacy closed for holiday. Took two pills on Tuesday, when picked up. Took two pills on Wednesday morning. Took one active pill Thursday morning. Had unprotected sex, same day. I went into an app I use to docment my pills. It says I'm two days away from fertility window. What are my chances of being pregnant? Should I use Plan B with my 72 window of sex?