I was having a chat with my mum about the issue. She has had similar with two bones fusing on one side of her lower back, and sometimes finds one of her legs are slightly different length.

Im looking into going to a different chiropractor, as this problem seems to be something that hasnt been looked into much before.

Is it possible that a slight more recent change in leg length could be causing the aches and pains in groin / hip / lower back / knee on my right hand side, and have been highlighted more by the fact that two of the main movements I do (Deadlifts and Squats) require powering through the heels of the feet and place more stress on my right side?