Impregnated By The Emperor

Bought from a slave market, Antonina fears the worst when she’s taken to a huge villa on the outskirts of Rome. She expects a harsh life of work and beatings in the fields around the impressive property, but, to her surprise, is handed over to a woman who bathes and beautifies her. A night of fitful rest in a luxurious bed is interrupted by the intrusion of a man she recognizes instantly, with the Emperor making it very clear why she’s been brought to him.
She knows that to refuse would be madness, so submits to the most powerful man in the Roman Empire — and he refuses to stop until he's sure she's carrying his baby.

This ancient rome erotica contains explicit themes of impregnation.