It might be, I suppose, although I don't think diagnosing people over the internet goes well.
I never had any real pain from my pelvis tilting, but I *did* have some similar discomfort and occasional shooting pains from shoes that didn't fit well combining with my gait changing.
I actually think there's a difference between hip rotation and pelvis *growth* - the latter is bone changes and unlikely after the growth plates fuse, but the pelvis tilting and the lower spine curving into a more feminine position seems like a reasonable outcome of minor muscle and cartilage changes as well as fat redistribution. In my case, it's very clearly that the weight going to my butt and thighs has changed the way I stand and walk; if I stretch *really* hard and try to pull myself as straight as possible I can get my spine and pelvis aligned the way it was pre-HRT, I just can't hold that position. So nothing permanently changed about the bone structure, but at the same time, if this is the only way I can comfortably stand and walk, for all intents and purposes this is a real physical change for me...