Why no sex 6-8 postpartum?

Jeanette • Hi :) ❤️ Mommy to two little boys ❤️ 2.22.16 ❤️ 8.31.17 ❤️ best miracles ever!!!! :) ❤️
I know were fertile and could cause another pregnancy but what if a condom is used? My boyfriend is something else lol he said he would be able to handle it but he wants it so bad. We were messing around and hes like threatening to push my on the bed and fuck me lol i wide eyed him like uhhhh nooo then hes like ill use a condom but i was like uhhh lets just wait lol so i finished him up but now i wanna know. Lol why not? I had a c section. So no vaginal pain or discomfort id say its more in my hips shifting back to its normal position, but i am bleeding still its been 2 weeks postpartom.