if you choose "2. inhalation entonox thru a mask", remember to take deep breaths.
And remember those deep breathe u take have to be during when u feel yr contractions coming..otherwise it will not be effective..The first time i use this 'laughing gas', the midwife did not guide me how to use it properly until i told her i m in deep pain...I also took the pethidine injection then but it did not help much at all..instead my right leg had numbling sensation after that n it took a few days to subside..
So for my 2nd delivery, i survived thru by using 'laughing gas' only...very agony but still managed to endure cos my pain threshold quite high..The scariest part is moments after my delivery, i discovered tat my eyes & nose blood vessel had broke due to extreme pushing n there were blood stains in my tears n blood mucus in my nose..
so before u decide which pain relieve to take, do consider yr pain threshold level too...