Missed Pill

I missed an active pill in my lo loestrin fe. It was the last pill in the second week. This is the first time in a few years I have missed a pill. I was active last Wednesday or Thursday (he finished inside me), so about 4 or 5 days before my missed pill. Should I be worried or is it to long after being active to worry about? And should I take extra precautions the rest of this week?