Seeking Solutions for Unexplained Left Hip Pain

Hello,

after researching numerous Reddit posts and various internet sources, including YouTube videos, regarding similar issues, I've spent countless hours without finding any conclusive results. Therefore, I've decided to summarize my problem and post it here for assistance.

I will write this into different sections:

PROBLEM:
I've been experiencing sharp pain around my left hip that sometimes radiates down to my leg. I've attached a picture indicating where I feel the pain (red being more intense than yellow). The pain is sudden and intense but tends to disappear quickly. I mainly feel it when I move, especially when I'm lying in bed and trying to get up, or sometimes when walking. However, sitting, lying, and standing (even on my left leg) are generally not problematic for me. The location and intensity of the pain vary - it can be around the hip, lower back on the left side, outer part of the left leg, or even occasionally in my right leg, or a combination, or almost nonexistent. Personally, I suspect it's due to nerve irritation in my lower spine.

Areas of pain

WHEN AND HOW IT STARTED:
This began in October 2023, seemingly out of nowhere one morning when I woke up and tried to get out of bed.

WHAT I HAVE DONE:
I initially consulted a general practitioner who prescribed muscle relaxants, but they didn't provide relief. Later, I visited three different orthopedists, but none could provide a definitive diagnosis. They conducted X-rays (which I've also attached), but they didn't identify anything significant. One of them suggested seeing a neurologist, which I plan to do. I also underwent rehabilitation, including electrotherapy and individual exercises, but without noticeable improvement.

X-ray pictures

WHAT I THINK COULD HELP:
Currently, I'm trying to walk daily and do some stretching exercises at home, but so far, nothing seems to alleviate the pain. I'm pinning my hopes on one thing: losing weight. I aim to return to my previous weight of 80 kg, which I had in April last year. I believe this could reduce stress on the spine, which I suspect is the underlying cause. Also, correcting my outward-pointing feet while walking might be beneficial.

BACKGROUND ABOUT ME:
I'm a 27-year-old male, 183 cm tall, weighing 92 kg (a bit muscular build), working in IT. Apart from occasional swimming or walking in nature, I don't engage in sports. I've never had any leg problems before, and I generally consider myself healthy. However, my feet tend to point outward. I'm consciously trying to keep them more aligned while walking and paying attention to my posture. I think this could also help. By the way, I reside in Europe, not the US.

Do you have any experience with this issue? Any tips, potential diagnoses, or information?