Forgot to say I had physio yesterday and my pelvis is out of place which explains the pain! My left side is higher than the right and the knee pain is because my knee joints are too high as the muscles are so tight, I've got some exercises to do and have to check pelvis position throughout the day
Yesterday she showed me how my putting my hands either side and seeing of they were level, after she showes me the exercises and moved me about for an hour they were level, I've tried it this morning but I'm obviously not very good at it as my hands are still wonky! Since finishing work though it feels a lot better but explains why I was in pain being on my feet all day, constantly up and down stairs and bending up and down!