system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why is it that estrogen is the female hormone that makes us develop feminine features, but birth control is just more estrogen that prevents pregnancy?
gpt
The pill mimics the hormonal message that you're pregnant. You get pregnant, your body sends a message to stop releasing eggs until the pregnancy is ended, so you don't have two fertilized eggs at the same time.