I had about 2 sucks on the gas but it ****ed me off so I stopped before it did anything. I asked for an epidural but DS was born before they got a chance to give it to me.
Make sure your support person knows what you want and how to support you properly. Biggest issue for me was I didn't want the epidural. I told my partner that no matter what I said during labour I didn't want an epidural, yet when I asked for it DF straight away was like "ok", even though I told him plenty of times before I went into labour that if I asked for pain relief I wanted him to talk me through it and support me to not have it.
Lucky for me it was over before we got to it but I was already disappointed in my birth so I can't imagine how I would have felt if I had the epidural