Risk of pregnancy?

hi there, i had sex the 12th and last weekend and both times condom broke. Fortunately it happened when we were starting and he has control of when he get the preseminal liquid. i am quite irregular (+40 days long) and my period is 8 days delay. i have my common PSM but i'm so scared. also i am in my final exams. do i have any risk of pregnancy? thanks a lot 💙