Thanks for your question on Health Care Magic.
I can understand your concern.
By your history and description, your discomfort is mostly suggestive of musculoskeletal.
But better to get done chest
x ray to rule out internal pathology.
If chest x ray is normal then no need to worry much.
Your discomfort is musculoskeletal only.
So follow these steps for better symptomatic relief.
1. Avoid heavyweight lifting.
2. Avoid strenuous exercise.
3. Avoid bad postures in sleep.
4. Avoid painful movements.
5. Start painkiller and
muscle relaxant drug.
6. Apply warm water pad on affected site.
Don't worry, you will be alright.
Wish you good health.
Thanks.