Bpopik - Just to let you know, I am dealing with similar issues right now....very similar.
Mine all started back in August of 2020 with a real health scare, DVT. That worried me because they told me that I could have long term leg pain, some people do and it usually shows up within 6 months. So I ruminate on it and worried. Add Covid stress and isolation with my family. Then in December I developed "Prostatitis" with rectum pain and sharp groin pain, and Adductor/hip.
The pain into my groin really messed me up and I also got panicky. Coupled with a huge work project that went live at year end I broke. My pain migrated to my lower back out of no where. I went to a spine dr. who said I had mild SI joint degeneration but nothing serious for a 43 year old.
That messed me up and the pain has increased. Along with that I have experienced twitching in my thighs and sore spots on my ribs/hips/calves and glutes. All of which have subsided aside from the back pain as it is what I focus on.
So you are not alone and everything you have had I have and it is gone. My GP thinks mine is TMS as well and from talking to coaches on the wiki they so too. Based on the history of TMS and anxiety.
Now my X-ray did show some mild issues with my Joints but others on here have said that Sarno said Arthritis and degeneration are normal abnormalities and should not cause pain. I have reduced my pain a little by addressing the fear.
I am not the best coach but just wanted you to know first hand my symptoms like yours are gone.