I'm so scared I'm so scared that I'll go into labor and not realize it ? my twin sister had her…

I'm so scared

I'm so scared that I'll go into labor and not realize it ? my twin sister had her daughter 2 years ago and literally didn't feel no pain or feel her contractions. She went to the doctor and SURPRISE her water was broke. She didn't even know, it's got me freaked out I might have my kid in the floor or car lol.