x-ray of the left shoulder with physiotherapy
In my view, this seems like a temporary problem due to the winter season, and the muscles and joints getting stiff often. This is also seen with limited joint movements as you say.
You do not need special treatment for this except for daily stretching exercises, and keeping yourself warm.
However, you could get an x-ray of the left shoulder to rule out major pathology. Physiotherapy of the shoulders will help too.
Regarding the constipation
, you need to take more fiber in your diet in the form of vegetables and fruits. Drink plenty of fluids orally.
You can continue the medicine for piles.
Hope this helps you.