So, I've heard women say that your fertile window is when you are most likely to get pregnant, and I've heard women say that you're fertile window is the only days that you can get pregnant. What's the truth?? I saw a girl post about how she wants to have unprotected sex when she isn't on her fertile days because you can't get pregnant if you aren't fertile. And then someone else commented saying you can get pregnant at any time. What's the meaning of all of this?