@prelucku just keep fighting for yourself. Reach out to the major medical centers. Send your imaging around to them. I had to do that for my current issues (long story but ending up with restricted stomach outlet by an adhered bowel to a hernia mesh). What started as constant colorectal that yield no results due to my organs being "fine" but everything is scarring, adhesions, and pulling and tugging during normal operations.
Did your Drs do an MRE? Any contrast with the other tests? They may need to see what happens when you eat or breath in order to see how the organs all play together. You won't see that in normal imaging which is why I've had to force them to order it, and I just paid out of pocket for the sake of getting it done. Not sure what your insurance is like, but being on Medicaid in the US is decent-ish locally but it massively limits the speed and quality of care externally of your local jurisdiction which is where I'm at right now. Awaiting a corporation to approve me to be seen by Columbia Health in NYC. They've already accepted my case. They weren't too busy for me like Mayo is lol.
But keep advocating for yourself. If you're in pain you have to make them listen some how. Otherwise pain just is tossed aside like take some ibuprofen. They didn't care I had to do that daily just for bladder relief and couldn't pinpoint that as a symptom of what I already knew was happening.
Some of these medical professionals and Drs aren't in it for the patient. They're in it for their own egos, money, and stature. Find the right ones. I have dealt with residual issues since 2016 when I had my major diverticulitis issues and surgeries. Since then, it has been a part time job just to find the right Drs who will listen to me and advocate WITH and FOR me. Not just tell me I don't see anything, sorry. And lastly. If you're smart with it and use it correctly (and unfortunately use a more pro or paid version and NOT chatGPT), use AI as a companion. Do research but hone in on stuff or complex things with AI. I use Gemini Pro and it has been a huge help these last few months alone.
Good luck. And be careful simply saying "I have pain" in the Drs offices or studies. It's too easily dismissed. Explain it. In detail. The more you can detail it the more they can see it is serious and then not simply "under diagnose" you.