Hmmm. When I run without the lift, it exacerbates the issue and my hips torque - one rolls forward, the other backwards, thus exaggerating the difference. Sometimes the asymmetry is obvious in the mirror if I focus on the area between my side and my arm, just standing naturally. My PT could do it by having me bridge 3 times and come down, then feeling the tops of my hip bones as I was on my back on the table, but I've never been able to self-evaluate and feel a real difference that way. It's really unfortunate you have to wait 4 weeks to be evaluated, because things may change by then.
For me, the muscle that protests the most is the rectus femoris (https://bare5.com/2015/09/13/the-couch-stretch/
), which I suspect plays a role in yanking one side forward more than the other. They'll both be sore and tense, but in different ways and different places when I roll. I had a military PT on the Army marathon team who told me this was a pretty typical muscle for runners to need to care for more carefully and taught me the couch stretch that's in the youtube link.
The other one I watch is the tesor fascia latae, which I go after by rolling with a field hockey ball high and forward on my hip, just below the top of my pelvis. It attaches to the IT band, and often IT band issues are TFL-related. Anyway, when I can't sleep at night from muscle pain, it's usually one of those two, with perhaps an angry psoas tossed in.
Sending healing thoughts your way. Hips...motherhood...orienteering...so hard to do everything we love, sometimes!