Hi
I agree with the others that getting into a pool/bath CAN slow labour down if you're not in really active labour. BUT it can speed things up as well, I am living proof of that lol.
With DD1 I laboured at home as long as I could before I wanted to know if something was happening or not. So we went to the birth centre where I was 5-6cm. I stayed on dry land for a while as I was coping absolutely fine, rocking side to side and breathing through the cpntractions, then I got into the pool. As soon as I did so, my contractions revved up and became almost on top of each other. I was only in the pool 5 minutes then my body started pushing of it's own accord. I had no control whatsoever, my body did everything itself. After 15 minutes my baby was born into the pool and I brought her up and out of the water into my arms.
If the birth centre had been open when I went into labour with DD2 I was planning on going there earlier on and getting into the pool sooner than I did with DD1 as I really didn't get any benefit from it at all. There was no relief being in the pool at all and I half wish I'd stayed on dry land but I was so desperate for a waterbirth. If I'd got in sooner I'm sure I'd have had some benefit from being in the water though.
xx