starlight... oh lovely, you still sound so angr and upset. i totally agree with blueshoes about the pain.
nothing except a GA will totally stop you feeling the pain.
ok.. pethidine does not stop / remove the pain, per se, it acts as a muscle relaxant and helps you 'switch off' and rest between contractions, same with diamorphine & meptid. Also opiates can make you vomit, which is not helpful !
gas and air - is again, not a way to stop / remove the pain, but focuses your breathing, and takes the edge off as your contraction peaks.
epidural - does stop and remove the pain, but can make delivery more difficult as relaxes the pelvic floor which can mean baby's head does not rotate correctly for birth, hence increased need for ventouse or forceps. Also, if it is allowed to wear off for the 2nd stage the pain can be difficult to cope with. A good epi will allow you to feel pressure to allow you to work with your body to push the baby out. But you will most likely be immobile, and on a drip, so you will be on a bed for your labour, which can slow things, as not all hospitals offer mobile epi.
water - again, does not stop or remove pain totally, but water is an excellent pain relief, allows you to remain mobile and feel supported, and able to work with your body. It supports the perineum, so can reduce risk of tearing. Many women find water to be a blissful way to get pain relief. Gentle way for baby to arrive in the world.
GA - not ideal, as crosses placenta, so only used for crash section, obviously means no pain, but you are not concious for birth of the baby and can leave you drowsy for a while afterwards
Being afraid, unprepared and frightened can make your body release hormones that make you panic and want to run away, rather than accepting what is happening to you. And that can make labour longer, more intense , more painful and harder to cope with.