You fuck her from behind

"Wake up lover...it's time for you to finish impregnating me..." Katy teases you as she winks at you and kisses you, her legs wrapping around you as she fondles your dick.

"Let me take this tight pussy from behind Katy...get on all fours for me baby..." you tell her as she does as you requested and you grab her hips as you slide into her and start to fuck her harder and deeper than ever, pretty sure this will do the trick if she's not already pregnant.

"UH...GOD...fuck...me..." she moans as you keep a tight grip on her hips and plunge your dick into her pussy, her walls wrapping tightly around it and allowing you to slam into her cervix with every thrust you make into her.

"After I get you pregnant, we'll be able to do this all the time Katy," you tease her as you pound away on her tight cunt, her walls squeezing down a little tighter on your dick every time you thrust it into her.

"You...bet...your...sweet...ass...we...will...now...cum...in...me..." she moans as she cums all over your dick suddenly. throwing her head back as you grab her by the hips and start to unload your cum into her again, her walls forcing more and more of your cum into her as you fill her completely and start to pull out of her.

"MMM...I can still feel your cum inside me baby...I bet it's knocking me up as we speak...so hot..." she whispers as she places her head on your chest and winks at you as she falls asleep, knowing you'd still be there with her in the morning to start your new life together.