Birth control help please!

So I had my period two weeks ago, and during this week I've missed 3 consecutive pills and have had sex here there between these missed pills. And today I just got my period again, it's not spotting or breakthrough bleeding because it's a lot of blood like a normal period. Is there still a chance I could be pregnant? Even though I just got my period super early? I don't know what's going on. I had to put in a tampon because it was pretty heavy. Help please