ask for heating pads. My labor was induced and I managed to do six hours unmedicated on pitocin, and two heating pads (one on my belly and one behind my back) helped a ton towards the end of that. I was basically on a tether to the bed and had a sprained ankle so I couldn't use most of the techniques I'd planned like a warm bath or shower or a birthing ball.
One thing I did notice, though, was don't expect to fall back to lying on the bed when it really hurts. Because for me, lying down on my side multiplied the pain hugely. I spent almost all six hours in a rocking chair and I hadn't expected that.