Hello and thank you for your post on e health forum.
Drinking aerated drinks like coke should be in moderation.
Over indulgence can result in gastritis, bloating and indigestion in some individuals.
But the history described here is not sufficient to know the cause of pain.
It could be due to musculoskeletal pain associated with daily activities.
You might benefit by consulting your doctor for a physical examination, which can help to know the exact cause.
I hope this helps.