The side-bend test that’s been mentioned (and the one you performed) is a common one for QL injuries.
However, simply passing one provocative test and making a determination from that is NEVER wise. And the fact that you performed the test on yourself reduces objectivity.
You said yourself that when you saw the doc for another issue, she “squeezed the area and it seemed to make the area worse.” This area, based on your research, appears to be where the QL is located.
Well, guess what? Another method of testing for muscle strain is direct touch - which is what the doc did, albeit inadvertently. People pass one test and fail another all the god damn time. This is quite common with low back injuries.
We are working with a few possibilities here:
If it is the QL, you may have healed just enough to pass that test but more aggressive stimuli (such as certain movements in the weight room) will cause discomfort. Since the injury, your body may have learned enough ways to compensate so that the test did not cause discomfort. This is quite common.
It indeed may not be the QL at all. I’ll say it again: in an earlier post I also stated that it could be the QL, multifidus, erector spinae, or even at the discs. I also advised you to get another examination so you can confirm.
You’re intelligent enough and humble enough to ask for advice. The members on the forum gave our theories based on our backgrounds. For example, I’m a Strength and Conditioning Coach who specializes in bridging the gap from rehab to the playing field.
The advice that I gave you was the equivalent of pointing the compass in the right direction. This really is the best that any ethical individual can do in an internet forum. If you have any desire to reach the exact destination, you will need to take this to the logical next step. This next step, which I’ve advised you of before, is a direct examination by a qualified clinician.
Describe to her the nature of the pain, the location, how long you’ve experienced it, and when and how it started. With this information, allow her to do her job. Once you’ve done that, feel free to get another opinion if you don’t feel quite right about the visit. Until you take this step, you’re just chasing your tail.
After the exam, feel free to give us a report. However, this next step IMO is an important one.