Thanks GF - its laughable really isn't it, the most simple things that you just can't do! I've had to find a new way of getting onto our bed cos its too painful to get on one leg at a time. We have a divan, and its quite high - so usually I would kneel on the bed and climb on one leg at a time, but I went to do that a few days ago and the front of my pelvis actually clicked and I was in agony. Now I simply can't lift one leg that high without the other! 
SO I have to sit on the edge of the bed, and swivel myself around, both legs at the same time, except that I don't have the tummy strength to lift up both legs together, so I end up kind of manually lifting my legs by putting my hands behind my knees and lifting...
I must look ridiculous!! 