Thanks weebles :)
I looked back to my original post and how I feel now. My perspective has changed (in a good way) from hearing all your thoughts and experiences.
This is how I understand the birth now - please do correct me if you think I have it wrong:
Sometimes epidurals dont work. You cant go into labour expecting they'll solve the whole pain issue and all the fear that generates. I had pinned all my hopes on this one solution and that led to despair.
The midwives let me down in not acknowledging that the epidural wasnt working either. This lack of communication made me more scared and confused. It was hard to be at all positive and confident for the rest of the labour. A doula might help when confusion like this arises.
An epidural also means the insertion of an IV (wow... ouch after 4 failures), a urinary catheter, a belly monitor, and greatly restricted body movement. It all adds to your pain and frustration when you really want to be calm and focused. Being trapped on my side and back through active labour was not the way to get my posterior baby to turn.
It is better to be able to move around and help the baby get into position. It seems like one medical intervention can snowball into several, because they each have a knock-on effect. So I'd leave an epidural in reserve next time, but as not an immediate go-to option.
Though the epidural was partially effective, the baby being posterior may also have removed any urge to push. I never knew this. I just thought I was doing it wrong. It was also the biggest contributor to then having an episiotomy and forceps delivery, not me just being too weak-willed to push.
I will have it in my next birth plan, to keep using G&A if I choose to during the pushing phase - unless it is genuinely hindering progress. To take it away preemptively and against my will was an error in judgment and caused more fear. A doula or more informed birth partner would have been able to speak up for me.
Having the right people at the birth is important. You want people you truly trust, who understand the type of person you are, what type of encouragement you respond to best, and who will explain what's happening at the time if complications arise. Giving birth is a mental trip as much as a physical one.
So.... while I originally thought an epidural would be the answer to all my problems, it probably made my labour that much more difficult. There are lots of things I would have done differently, and hopefully I will be more prepared next time, even though I know there are potentially lots of new issues that could come up.... that is the nature of childbirth. If nothing else I know that I have done it once, I made it through, and the next one might even be a bit faster.
I am also more appreciative now that, after all the mix-ups and trauma, my baby came out healthy and that has to be the primary concern. My heart goes out to all the parents who aren't this lucky. x