Thank you nikbrad - I noticed your thread after I'd put this one up - should have checked beforehand.

I also have sacroiliac back pain apparently caused by the hormone relaxin buggering up my pelvis. So it's probably inter-related I would think. I've had a bit of physio but this latest round of leg pain is making me quite grumpy as I'm finding it tricky to walk so it looks like it's back to the physio for me.