Firstly, congratulations and try not to worry too much about this small part of pregnancy/parenthood. Getting prepared and feeling in control of labour was how I personally approached it, rather than looking at how painful it supposedly is.
I stayed fit which is apparently a good thing as labour uses muscles, so if you can keep walking or swimming then it can really help. Also mentally, as I knew I was going to be as physically able as I could be. For me, this meant I was walking between 3-5 miles most days (with Granny Dog) up to week 38. I stayed relatively mobile all the way through, and was only slightly waddling into hospital at 40 weeks.
I also binge watched the tv series, one born every minute, which sometimes scared me but equally showed relaxed hypno style births - leading me to decide I wanted a water birth and to do the controlled breathing. Also seeing some ladies scream or grunt or breathe really helped me conclude that it’s different to everyone, and my own (deluded) belief that everyone screamed was incorrect.
So if are really anxious then please discuss it with your midwife, they can advise you of all the pain relief options available and help you plan.
But do be aware that plans can change, I didn’t get my water birth experience as I ended up with preeclampsia and had to be fully monitored. I apparently don’t show pain (even Husband was shocked how calm I looked), so the midwives couldn’t gauge my need well, and assumptions that FTM labour takes around 8 hours usually (build up in contractions). My labour was unusual apparently, lasted 3 hours from waters breaking to birth, contractions didn’t build for me and just began at labour intensity. For me, the fear of the pain getting worse like I’d been told it would rather than unmanageable pain. The midwives didn’t offer reassurance or the appropriate level of pain relief, as they didn’t realise I was fully in labour until past crowning. But once they realised I was given various pain relief, and actually I’d already done the hardest part without anything. I was relieved that I was being listened to and mentally was able to calm down.
My ramblings are hopefully reassuring, there was pain in labour for me but I quickly forgot it. The stitches and general uncomfortableness afterwards are more what I remember, and the shock of having to also “birth” the placenta when I thought it was all over. So maybe do better research than me.
So good luck and please try not to worry about labour