Can Overdose Of Birth Control Pills Be Taken To Prevent Pregnancy?

Hi, last night I had unprotected sex. I had been on the pill for 6 years, and stopped it for month.I just started my new course 1 day ago. I was still was bleeding when I had sex, though today I woke up and did not have any period. I took 6 birth control pills, in the morning, is that bad? should I continue the rest of my packet?