The two novels I read before are both time-travel novels. Can you recommend their titles?

In the first book, after the female protagonist traveled to ancient times, she was drugged and fainted every night. Then the male protagonist came to find her for seven consecutive days. Then the female protagonist met the male protagonist's brother, the prince, and went to school together to learn magic. At first, the female protagonist thought that she liked the male protagonist's brother and thought that the male protagonist's brother was the one who drugged her before. In the end, the female protagonist knew that the last drug was the male protagonist, and they ended up together. It was probably like this. The second book was that the female protagonist seemed to know how to catch ghosts. She accidentally traveled to ancient times and met the male protagonist. The male protagonist was both a prince and a state preceptor. After the two of them got together, the female protagonist got pregnant and gave birth to some treasure. The male protagonist recovered his memories and said that he was a god in his previous life. In order to save his lover in his previous life, he reincarnated and so on. The male protagonist's lover in his previous life wanted to revive the thing in the female protagonist's stomach. Then the female protagonist was very sad and asked the male protagonist to seal his memories. In fact, the male protagonist's lover in his previous life was the female protagonist. It was just that he was accidentally swapped. Please tell me the names of these two books.