hi again!

i have done the exercises and i can feel a difference, also tried gua sha, felt really nice^^.. now there is just a little problem. it happens sometimes, not sure if im worrying too much but sometimes i get a kind of pain in my right shoulder. feels like i have a sore muscle and sometimes i get that same ache around the bicep area(?), well somewhere in the middle between elbow and shoulder. in the past i had that a few times already but just felt a slight pain but now i can feel it much stronger. its just my right side though. any advice? also, when doing stretching exercises my right hand would feel somewhat thick, its not swollen or anything, just that it feels different from my left hand. could that also have something to do with the shoulder problem now?