Hi Sally,
As far as I know, not really. The decision to do the emerg c sec was based on 1. my waters had been broken for 24hrs and we had been told that after 24hrs there is a greater infection risk 2. I had only dilated 1cm whist in the birthing suite and on the drip (was at 3cm when we came in and only 4cm 10hrs later), and 3. without the drip, I was not really having any contractions on my own IYKWIM? At one stage DS heatbeat droped and he was a bit distressed, but it was not the defining factor except that is scared me (and dh) and at the stage that my ob was considering options 1. I was exhausted (I had been awake 36+hrs) 2. I did not feel that my body was feeling any differenly eg the pain from the contractions was not moving, and 3. when I overheard the MW say that DS was showing some distress, I basically said get him out alive and do it now. I think the rocky conception/pg prob made me fearful of my bodies ability to keep going and to have my baby naturally.

When I asked if there was any obvious reason why labour had 'failed to progress' (gee I hate that term), the answer was 'no'.

Now having written all that, the other side to your question is the mental one, which is, I think I had conditioned myself to belive that DS birth would be c-sec, because my body had 'failed' to get pg naturally, needed heparin/asprin to maintain the pg (had 'failed' again by not being able to maintain a pg by its self) so I think deep down I expected to 'fail' at a natural delivery. I think that because I had not really though/discussed this at all (and still have not really), I was just focused on getting a live baby out rather than how I was feeling and the impact that all these other factors would have on how I thought about the birth experience. Surprise surprise I have been suffering PND

Happymum - I'm sorry to read about your experience with your 2nd DS, and hope that there have been no long term effects. Cant imagine how hard it would have been for you. Glad that you had a better experience with your third!
FG