Okay all my PP mommies, I need some advice..

This might sound like a stupid question.. but I need to know. I had a C-section two weeks and three days ago - my bleeding stopped 2 days ago and last night, had unprotected sex with my boyfriend (I know, dumb move).

Anyways, I am exclusively breastfeeding (a thousand times a day) and he didn't come inside me because we didn't finish, he peed just before but I'm worried about pre-come and getting pregnant so close after. I don't need to be lectured about contraceptives, so please refrain. It was absolute heat of the moment.

I just need to know what the likelihood of getting pregnant from pre-come is. And yes, I've spoken to my doctor and she said if I feel like I want to get the Plan B pill, it's totally safe. Just looking for advice here.. thanks!