The experience of contractions is also completely different if your baby is back to back.
With normal labour where the baby is positioned properly, the head is pushing into your cervix (which itself doesn't have very many nerve endings in it) which helps it dilate and so the contractions are around the front where your womb is helping to push the baby down. Gravity and all that active birth stuff helps because it increases the pressure on the cervix causing it to dilate faster and get labour over with quicker.
If the baby is back to back, the pointy bit of their head is not pushing into your cervix, so there's no pressure on the cervix. It will still dilate, but nowhere near as fast so labour can go on forever with hardly any progress being made. The head is pushing into the base of your spine, which means that you'll feel the contractions all in your back/sometimes radiating around your entire body and they can be much more intense and painful.
If this is the case then you're better off on all fours in order to "hang" the baby away from your spine and help take the pressure off. You should also apparently do absolutely anything that helps you relax, including an epidural or pethidine if the pain is too unbearable. This enables your body to open up and the baby is more likely to turn or at least engage properly in your pelvis, even if they are still back to back.
I wish I had known this before my last two labours as they were both like this and I had no idea. I'm going in fully expecting this baby to be back to back as well. If he isn't then I'll be very happy but I'm definitely reading up on the back labour management tips. Just assuming at this point my womb is shaped that way :o
It was so confusing because I remember reading things like "There will be parts of your body which are not in pain" WHAT? People experience that in labour?? Or even just watching videos/reading birth stories and wondering how the hell they weren't as out of control and panicky as I was both times. Or how they were so lucid in between contractions. I was just barely recovering and in some kind of pain hormone haze in between mine and didn't have time to do/think/say anything before it would start again.