Your girlfriend has something very important to tell you. You can tell she is nervous, so you brace yourself for whatever it is she about to tell you. "I'm pregnant" she says hesitantly. Startled, you ask if she is joking to which she responds that she really is pregnant. Your girlfriend then goes into detail about how she realized earlier in the day that she was late and upon taking a pregnancy test, which came up positive, went and took a ton more, with each one yielding the same result. Positive. And you both know exactly what night it was that got her pregnant. She nervously rambles about how she is happy about the pregnancy, how she wants nothing more than to start a family with you, but she's been nervous all day about how you would react, since the two of you have never spoken about anything like this. "How do you feel about this?" she asks. Without hesitation you tell her just how happy you are. Just like your girlfriend, you can think of nothing better in life than starting a family with the woman you love. Elated, she jumps up and kisses you. She goes on about how happy she is, how perfect you are, how she can't wait to see the way her body will change over the course of her pregnancy and how she is so lucky to be experiencing parenthood with someone as amazing as you. Then, she brings up how there is something that the two of you can do to make this day even more perfect. She wants to make love. One of the main symptoms of her pregnancy so far has been an increased sex drive, and she wants to show you just how wet she is for you. Your girlfriend has you lay down on your back so that she can ride you. After all, once she gets bigger this may be harder to accomplish so she wants to enjoy your cock as much as possible in this position while she can. She goes up and down on your already rock hard cock, her pussy so wet it's practically dripping. The thought that from now on you will be able to cum inside of her and fill her up with your seed each time the two of you have sex from now on makes you even harder. And, judging from how horny she is, you have a feeling the two of you will be having sex a lot during this pregnancy. After riding your cock for awhile your girlfriend starts to get close to cumming. You can practically feel her tightening up around you. She assures you that she will be able to keep on going after she has her first orgasm and then she cums hard while still riding you. Once she catches her breath, still moving up and down, she tells you to get on top so that the two of you can cum together that way. You do as she wants. She lays down on the bed and spreads her legs for you. Before going into her again you feel just how wet she is. More turned on that ever, with your dick so hard it's pulsating, you go back inside of her and start thrusting fast. Being with her is amazing. Your future together is going to be amazing. And cumming together, having your seed explode against her already pregnant womb and filling her up will also be amazing.