That it is not awful for everyone. After the pregnancy from hell (I ended up in a wheelchair at one point, and on meds for nausea) I really enjoyed giving birth.
If you have a long latent stage, which I did, the baby may be very low down. This can make peeing really painful. If you get on all fours and pee over a tupperware box, the baby drops away from your bladder and it doesn't hurt.
Chewing ice chips can help you feel cooler in labour. I brought some in an Eskie when I finally went in to hospital. They were really, really lovely. Very refreshing.
Hospital food is nasty, and served on a schedule when babies are not. Even food court food can often be minging. I brought things I liked to eat in with me, and snacked on them after the birth, which was at 4 am, so not very food-shop-friendly. Doritos, guacamole and olives, I chose. Healthy. (Hey, I brought some apples, too!
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Don't be a hero. If something hurts more than you can bear, ask for the medication right away. I had nothing but a TENS, water pool, and gas and air, because when it hurt more than I could deal with, I looked for help in that order. It never hurt more than they could address, which was a lovely surprise after a horrible pregnancy (I had a horrible time trying to breastfeed, too. 1 out if 3). I think feeling in control of the pain helped me manage it - if I'd not had such success with those two I would have been the first wanting an epidural, but I was never scared by the intensity of the pain because I always stayed a step ahead. I looked on pain relief as a staircase and ruled nothing out as I went up it. I think that attitude can help.
The advice to keep a jug and to pour water when you pee afterwards is bloody good advice, if you have grazes/tears/stitches. So is Lactulose to soften the poo. I didn't do that, and actually it was fine, but God, the fear of bursting my stitches. I wish I'd had the reassurance of the Lactulose.
Don't try to buy a nursing bra/new clothes in the first 6 weeks. And if you're the lady in the John Lewis bra department who had to handle me crying because only 3, hideous, old lady (non-nursing) bras were big enough 3 days after I gave birth,
I apologise. It was an emotional time. 