In The Story of Yan Xi Palace, why is the Queen Mother unhappy when the princess is pregnant?

In The Story of Yan Xi Palace, the Queen Mother was very unhappy because she thought your princess had cheated her again. Getting your princess pregnant should be a happy thing for everyone. However, when the emperor looked at the queen mother, the queen mother looked unhappy. She thought it was too big, and the princess was angry because she kept it from her on purpose.

Your concubine once cheated the queen mother. At that time, in order to save Shun Empress who was being hurt by the Empress and others, she deliberately put makeup on Shun Empress and lied to the Empress Dowager that she was the favorite daughter of the Empress Dowager and the reincarnation of An Gongzhu. Empress Dowager Cixi, who was cheated, was filled with joy and ended up with nothing. She was very angry. This matter has been filed with the Queen Mother.

Besides, your princess has been taking drugs before and doesn't want to give birth to an emperor. Now she is pregnant again. And at such a critical moment, the queen mother will inevitably feel that your princess is ignorant and lied to her once, so she is very angry. The emperor was very happy after hearing the news. Walk quickly to your princess and look at her with joy. But he suddenly felt something was wrong and his expression became very serious. However, this seriousness is also a kind of loving blame. The emperor fondly pushed the imperial concubine's forehead and then asked her why she was pregnant.

Your princess was not happy to see the Queen Mother, so she quickly explained that it was because she was weak and the monthly events were not accurate, so she didn't know how to tell others! Although this is said to the emperor, it is also explained to the queen mother from another side, hoping that she will not blame herself. However, it seems that the Queen Mother still refused to buy it, and got up and left before your princess finished speaking. ?