Help ?!

I’m on the pill, due to I had an ovarian cyst. I started it almost 2 months ago. I had a period the entire time. I’ve been having unprotected sex and I’ve missed 2 pills then I just stopped taking the pill. When I did my period stopped. I had unprotected sex after I stopped my pill. The unprotected sex occurred on September 28th. Then my period completely stopped. I’ve been having unprotected sex since September 7th. I stopped the pill on September 13th. I’ve had unprotected sex on the following dates after I got off the pill - September 7th. September 14th. September 21. September 24th. September 27th. September 28th. Could I be pregnant ? I’m not completely sure how the pill works with all that.