I have had (and still have) pain in my shoulders. The first one started in my left shoulder. It lasted almost a year and then ended, although I can't move it at all like before and I can't take some sleeping positions either. And since the end of 2023 to date I have pain in my right shoulder. Same symptoms.
What I can say is that a few months ago I felt the urgency to change things within myself. Not just a feeling, but a thought...
Have you sought a medical diagnosis to rule out obvious things like arthritis? I myself have suffered from a trapped ulna nerve over many years, for example. This causes pain from time to time which radiates from my neck down through my left arm to the elbow and via the wrist to my little finger and the inside of the fourth digit, which now feel permanently numb. I was offered an operation to correct it but it only had a 50/50 chance of success, which didn't seem like good odds. Thus, I have learned to live with it and now just ignore it unless it is particularly painful and numb. I would just mention that another sign of DNA changes the C's referred to was hair and finger nails growing quicker than before. Have you noticed this?