Many pregnant women, one not pregnant looking down on them

The margin of the page you stop on says something about the goddess Hera and her protection. Looking at the inscription, you figure maybe the one woman not pregnant had been spared. Maybe this was some kind of magical birth control?

You begin reading the incantation aloud, and notice a subtle, radiating warmth from your abdomen; right about where your uterus would be. As you read further, the heat increases slightly. You notice James picking up his pace. You have to beat him to the finish line.

You speed through the rest of the incantation, feeling the heat glow outward, slowly engulfing your entire body. You could swear the feeling extended about a foot in front of you, too, but you're unsure how that could possibly be. When you finish, you feel a small twinge pain in your abdomen where the warmth began.

You lay back on the bed, hoping that the spell does what you think. James' pace quickens to a fever, and you find yourself liking the feeling slightly. May as well enjoy it while it lasts. You close your eyes and let the feeling of pleasure take you over. You feel an orgasm rising surprisingly quickly. Just as James pushes himself hilt-deep, you cum, spasming on his dick. You feel him throb and throb inside of you, dumping his virile seed inside of you.

Unknown to you, the spell you had cast was an ovulation spell. There was a waiting egg, with James' seed swimming dangerously toward it.