Could I be pregnant again

At 6 week pp I got on the mini pill because I Breastfeed exclusively. I got my period 2 days before my pp checkup and it didn't stop till 11 days into my mini pills. So I took 11 mini pills before my period stopped. On the 6th mini pill I let my fiancé cum inside me and on the 21st mini pill I let him cum inside me two times. I am on the 22nd mini pill now and my daughter is 9 weeks 2 days. Could I be pregnant? Just curious on effectiveness of the mini pill after baby.