Gas and air was marvellous. Made me feel very light headed, but got me through the early drip induced contractions. I had a death grip on it for active labour.
At around 3cm gas and air was no longer enough, so I asked for diamorphine (escalating pain relief like PPs). I may have made a mistake in requesting the full dose. Either that or I'm sensitive to it. Either way, I was as high as a kite. When I wasn't sound asleep between contractions, I was generally incoherent, which sucked when I needed to consent for bloods, a FSE (Foetal Scalp Electrode) to monitor baby and dilation checks.
They only had a brief period as well, as I'd only wake up as a contraction was heading towards its peak. However, I was more intent on sucking on the gas and air to help me get past the peak, and then to drift back into unconsciousness sleep. I have piecemeal recollections of these brief periods.
Fortunately the diamorphine was wearing off when I hit 10cm. They took away the gas and air (meanies) so I would stay lucid enough to push. What was left of the morphine was enough on its own to keep me relatively pain free for pushing.
Knowing what I know now, if I could do it all again, I'd request a smaller dose, but otherwise I wouldn't change a thing.