Was this novel about the male protagonist falling in love with the female protagonist due to special physical reasons?

I recommend 'Old Ancestor Reborn, Busy Raising Babies' to you. The male lead was a ten-thousand-year-old divine ancestor who had accidentally been reborn into a world called Planet Aquamarine. He was still pregnant. Along the way, he and the female protagonist took the child on a journey to find his father in another world. The male protagonist slowly fell in love with the female protagonist because he was with her. Although the male protagonist's body was a little special, it did not stop the development of his relationship with the female protagonist. I hope you like my recommendation.😘