Hi dinny. I think I know how you feel. I was absolutely petrified second time round: really, really, really scared. I'd have done ANYTHING to get out of it. I just couldn't work out why either - I didn't know whether it was because I knew how much it hurt or whether it was fear of death now that I already had a child to stay alive for, iykwim, or whether it was fear of pain or what. I just couldn't put my finger on it but I spent most of my second pregnancy in a state of fear. I was like one of those dogs you see going round and round and round trying to get comfortable but I just couldn't. Physically I was fine.
Anyway, it was awful, worse than the first time - sorry! - BUT, and it's a big but, I had a different partner and so gave birth to a big 9lb 8ozer, when my first was only 7lb 1oz. Big difference! And I wondered afterwards if my body knew it was going to be harder. Maybe, maybe not. Maybe it is entirely natural to fear it. Or maybe, as a doula suggested to me, it's because a 'culture of fear' (her words) exists about childbirth in this country.
What I realised afterwards, and I really hope this helps you since I didn't realise it until afterwards, was that worrying about it made no difference at all! It just made me miserable for 9 months (as if the hormones weren't bad enough) and had no effect on the outcome.
I had a relatively easy time first time too, 7.5 hours at home. Second was apparently 5 hours or something, although it felt like a damn sight longer, also at home. Do you have great midwives? Are you happy with your choices about where and who's going to be there and arrangements for your dd? I arranged some counselling when I was 35 weeks pregnant with a woman who specialised in pregnancy counselling but didn't go in the end. I did buy a book though called Birthing from within which was suggested by a doula I met. Do you think you'd like a doula? I had one arranged but didn't call her in the end. The book's a bit hippyish but there's some useful stuff in there. You can have it (free, I'm not going to need it again) if you want it, just send me a message through CAT. I'm happy to talk off board too if you think I can help.