Hi, I Had Unprotected Sex On Friday And I Took

Hi, I had unprotected sex on Friday and i took P2 on Sunday evening at around 6pm. From my working this was roughly 50hours after having sex. Will it work ?

I had unprotexted sex because my periods are regular and i should have been safe on that Friday as i had ovulated about a week or more earlier. i was expecting my period around now but they have not yet come.