I had an epidural with DS1 that wore off when it came time to push (the machine was on/off all morning and too late for the nurse to do anything by the time it came to pushing time!)
I had awful IV edema swelling and I think it also attributed to post partum issues (milk coming in late, slower recovery, etc.) for me.
I went unmedicated with DS2, he came so fast I didn't have time to change my mind! Recovery has been a breeze and milk came in fast without the horrible engorgement that I experienced the first time around.