After Rebirth, I Relied on My Good Pregnancy and Good Health to Marry the Regent.

The day my eldest sister stole my fiancé, I didn't resist. Instead, I threw away the maid who was guarding me and turned around to find my father. "The engagement is given to my sister, and my daughter will marry the regent!" My dad looked surprised. It is true that the regent took charge of the government, but the heirs were in trouble and his temper was unstable. But outsiders don't know that I was born pregnant! But in my previous life, my sister and stepmother accused me of cheating on me before marriage because I was pregnant and had a plump figure. When my fiancé hated me, my eldest sister took the opportunity to marry me instead. On the day of my wedding, the eldest sister was still worried and sent me to a brothel as a lowly servant, and ordered the madam to beat me to death. And she and my fiancé had children and lived a happy life. I don't want to accept my fate again in this life. What if I steal my fiancé away? She can't take away my good pregnancy physique!