Will my emergency contraceptive work?

Hi everyone :) I had unprotected sex last Wednesday around 2:30, the last day of my period. On Saturday I took an emergency contraceptive pill from Amazon called MyWay around 8am. The period tracker says I ovulated yesterday, I took an ovulation test today and it’s positive so I’m still fertile, and the pill didn’t delay ovulation. I understand it looses effectiveness the later I take it, and I should’ve taken one sooner. But now I’m past that point lol, and would like to know if it’s still possible that the pill failed and I’ll become pregnant? Does sperm last for 6 days? Has this happened to anyone? TIA 💕