I Was Raised By A Demoness is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Xu Chen slowly opened his eyes, and was shocked to find that his wife Lin Wanqiu was lying atop of him, with her fingers lightly placed on his belly. She said softly: “Husband, it’s time for you to give birth tonight…” Xu Chen looked at this familiar yet unfamiliar woman, and hurriedly asked, “Who are you?” Lin Wanqiu smiled and said, “Dear, I’m your wife, don’t worry, it won’t hurt too much.” After speaking, Lin Wanqiu gently slit open Xu Chen’s belly.”