I think it's totally normal for us to worry a bit during pregnancy, especially about what our labour and birth will be like.

And our natural tendency to worry a bit can be a great motivator...to seek out ways to prepare ourselves for birth, whether it's sorting out any issues/fears from last time, or practising some relaxation/awareness techniques so that they can be used most effectively during labour.

You might like the book "Birthing From Within" by Pam England. I bought it at my local health food shop but if you can't find it in a bookshop then you could get it from amazon. It has lots of great ideas about fun ways to get in touch with your feelings from your previous birth....and also ideas for things you can practise getting ready for your next birth (like breath awareness, relaxation techniques etc).

And I second the Yoga suggestion!