What Causes Left-sided Pain In The Back?
Get done chest x ray.
Thanks for your question on Healthcare Magic.
I can understand your concern.
By your history and description, possibility of musculoskeletal pain is more likely.
But since you are asthmatic patient, we should definitely rule out lung infection first.
So get done chest x ray.
If chest x ray is normal then no need to worry much.
Apply warm water pad on affected areas of chest.
Avoid movements causing pain.
Avoid heavyweight lifting and strenuous exercise.
Take painkiller and muscle relaxant drugs like ibuprofen and thiocolchicoside (if you are not allergic too them).
Don't worry, you will be alright with all these in 2-3 days.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.