Is the posterior bundle of deltoid injured? I used to feel the same way. I'll be fine after a few days' rest.

You must warm up, or you will get hurt easily. Also, don't use too much weight at the beginning, especially the shoulders. At that time, it was still difficult for me to resist injuries when I was heavy. This is a minor injury. Just have a rest.

But I suggest you describe the parts of your hands clearly, so that everyone can help you make an accurate analysis.