Yep, I was another sufferer, pretty much all through my pregnancy. I tried pretty much everything - physio, acupuncture, support belts, exercise (which made it worse).

Believe it or not, the only thing I found that gave me a bit of a relief was putting on a pair of high heels (not joking). Nothing too high, just something with about a 5cm wedge, cos it would tilt my hips enough to relieve the pressure on the nerve. I was probably the only full term preg lady on the planet getting around in a pair of heels, but it did make the world of difference, even if I looked crazy. And, when I told my physio she didn't believe me until she saw how I stood in the heels and then could understand how it would work.

Don't know if it was just a fluke, or had something to do with the fact that I've spent most of my adult life trapesing around in ridiculous shoes and my body is just more comfortable that way.

Anyways, HTH