Will birth control pills overdose and cause an abortion or miscarraige?

I was on birth control and my husband and I decided to try and conceive, but about a week later things happend that we couldn't carry out this plan, so I got back on birth control. Only I took all eight pills at once to catch up and the next day I had some really heavy bleeding. My husband thinks I was pregnant before I got back on the pills, but I took them anyways. If I was pregnant would the heavy bleeding have ended my pregnancy?