There is a weird connection with the leg pain from the sciatic nerve and bladder evacuation.
By coincidence, one of my brothers has also been suffering from sciatica lately. We were comparing symptoms last week, and although it seems that his is not as bad as mine, one comment intrigued me: "It's at its worst when I'm having a slash. Just as I get to push out the last few drops, that's when the leg pain starts up."
I've had a pretty mixed day today. Having been at home all day, apart from a visit to the doc's, I've spent a good deal of time in the semi-supine position described by mrcharly above, and that has helped a good deal. At other times, I've had a wander round and my leg has become very painful. However for the last few hours I've been a lot better - until going for a slash a few minutes ago. I walked to the bog perfectly normally, no pain whatsoever. Had my slash and I was struggling again.
The doctor warned me about the possibility of not being able to empty the bladder under sciatic conditions and if that happened to go straight to A & E. It hasn't been that extreme, but there have been a few times in the past two or three days when I've been standing there waiting for the floodgates to open.
I really do hope I'm on the mend now because conditions such as this are really interesting when they don't hurt too much. When they do, a couple of times I've been reduced to tears.