I like this pose. Or, I used to like it, back in the day when I was younger and did it daily. Now I don’t do it that often and when I do it I often get a pain in my upper back. Right below the shoulder blades. It’s not in the spine, it’s in the muscles, it passes in a day or two if I don’t do that pose for those days.
I do remember that back when I was younger and did it after having taken a shorter break from it I used to get a similar pain for a few days that then passed. Is that what I should do here, just keep doing it for a few days and see what happens? Or would I be taking too big a risk?
My neck is fine, my lower back is fine, but the lower part of my upper back hurts still today (did the pose yesterday) and hurt quite a bit yesterday. It feels like a tension thing.
Meaning: You should not experience pain during the asana, nor afterwards. When you do experience pain, you should modify the asana or skip it altogether. Not only because of the discomfort and risks that you mention, but also because pain stops you from being aware in the pose. Doing yogasana without awareness is not yoga.