Read Empress in Turbulent Days Manga:
The surgeon, Tang Xiaoli never thought that she had time traveled one day! Whe she opened her eyes after time-travel, she saw a handsome guy was looking at her and said, “My empress, wasn’t I good to you ?”
Waking up, she only found herself having time-traveled to a palace. Forced by a pervert emperor into bed, he told her she was his empress and belonged to him. Waking up a more.. gain, she was slapped by a concubine and told to kill herself by a eunuch…”why I’m so miserable as a time-traveled girl!”