Anyone not find out they were pregnant until they a few months gone?

My friend didn't know shes was pregnant until she was in labour.

a few weeks before she was getting married she was having really bad pains in her belly so she want to the hospital and they did tests and then said to her your in labour, she looked completely shocked and said to the nurse what do you mean I'm in labour I'm not pregnant and the nurse said your 9 months and in labour a few hours later she became a mammy to a beautiful baby boy. She thought she would just be leaving the hospital with some painkillers instead she left with a baby 💙