I Gave Birth to a Villain’s Child is a Manga/Manhwa/Manhua in english language, Drama 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

Karinne, the daughter of Viscount Tyrian, is on the verge of getting sold off as one of the lustful Count Dupo's concubines. After sleeping with a mysterious handsome stranger, Karinne gives birth to her son… all according to plan! After deeming his daughter worthless, he sells her off as a maid to the Grand Duchy. Losing the will to live she proceeds forward only to reunite with the man who she spent that fateful night with, the Grand Duke.