I had a 3rd degree tear with my dd, and had bowel troubles for sometime afterwards.
My mum asked the MWs why didn't they cut me if they knew i was going to tear and their answer was they do not routinely cut now as a tear heals better, which i did understand the reasoning about that, imagine if you ripped a piece of paper or cut it, the rip would bond together quicker as it isn't a clean cut.
Strangely enough my biggest fear was and episiotomy, but honestly at the time i just didn't care really.
My tear, i am fairly certain is down to 2 factors.
- i did NO pelvic floor exercises.
- The MW didn't tell me to pant the head out, therefore i pushed extremely hard as the head was crowning, taking my pelvic floor with it.