And three months it’s enough time to decide
That makes an assumption that the person is aware they are pregnant the entire time.
I didn't know I was pregnant until I was roughly 11 weeks because I was using birth control. Except this was before the more recent shouting-from-the-rooftops news that antibiotics can render birth control pills ineffective. I'd been on antibiotics for two weeks around Christmas time and here I was in March, at my doctor, trying to figure out why I was sick when he asked me to do a pregnancy test.
I didn't get 3 months to decide. I had to wait 2 weeks before I could get an appointment for an abortion for a pregnancy I absolutely did not want and had been doing my best to avoid by being on birth control.
I'm not the only woman with this story or a similar one. Many women simply don't know they're pregnant until several weeks in, especially when they are using birth control and don't have an abundance of symptoms.