1. The pain does end pretty quickly after baby is out. All pain will come to an end eventually...even the ring of fire.

2. Vaginal birth is what your body is made for. Take religion, spirituality etc et out of the equation and at the very base level of mammalian function is the fact that we're made to give birth vaginally to a baby mammal (unless you're a Marsupial). So, your body knows exactly what it's doing.

3. If you freak out and get worked up, baby gets worked up too. Do your very, very best to not panic. There's no need to panic. As above...your body knows what to do.