HELP ME PLEASE😭

Hermione

so me and my boyfriend were having sex and he came but when he went to take the condom off we noticed it ripped completely and he came inside me. I finished my period like 3 days ago and i’m meant to start my fertile window tomorrow but that is when i’m taking plan B so please can someone help and say whether i’m at high risk of ending up being pregnant..🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️