Hi I have had bad back labours each time, you know pretty much straight away.. contractions tend to be irregular for a while, and my waters have broken all but once. I'm sorry i don't have much advice, I could'nt really stand being touched, it felt like my back was breaking, nothing much helped..I actually pulled on some coat type hooks/kind of hung off them with each contraction to rack myself out.. don't lie down keep upright, walking or kneeling if it gets too intense.I used the gas each time except for the first baby 3rd baby I had an epi which was great and I would recommended it, it helped me relax..sometiems when you have pain like that you tense up which is not good as far as labour progressing, I wish you the best of luck. I hope baby turns for you.