I have to weigh in a bit. I had what I can only characterize as nerve pain. It affected my inner thigh, hip, lower back, and groin area all on the left side. This lasted from Dec 2015 to March 2019 in pretty much constant pain/tightness. Over the past year that pain has went away. This was done through relaxing and minimal stretching that increased with time. Additionally I increased some of my workouts over that time to increase my muscles down there that had weakened over 3 years.
I just want to stress that this took a long time for the pain to go away and didn’t just disappear all at once, but it decreased slowly over time. It wasn’t until probably 3 or 4 weeks ago that I haven’t had any pain at any time throughout the day at all. For the 3 to 4 months prior to that I was maybe at 95% gradually going to the 100%. Before that I would say It took 3-4 months to go from 50% to 95% and for the 3-4 months prior to that it was from my high pain to about 50% of the pain.
I can’t say that it will work for everyone with the same pain, but I will say that I was very doom and gloom for over 3 years and I never thought I would feel like this again. I also can’t say that it won’t come back at some point as it may, but I’ll take what I can get. I think mine was overly tight muscles from the original surgery and then couple that with the anxiety I had, which tightened things even more, it just took a long time for things to loosen back up and feel normal again.
The medicine that I think helped me the most was diazepam, which is a muscle relaxant/anxiety reducer. I used that at the beginning of the 1 year and then got off of it.
Hopefully things progress in a positive direction for you and the pain goes away with or without the reversal. Please let me know if you have any questions, I know there have been others that helped me and made a big difference and gave me hope, such as @PVPSux and @RichUK.