Thanks for your question on Health Care Magic.
I can understand your concern.
Your
chest pain is associated with movements, so possibility of
musculoskeletal pain is more.
But better to get done chest
x ray first to rule out lung related causes because your pain is also associated with
cough.
If chest x ray is normal then no need to worry for lung diseases.
Musculoskeletal pain is more likely in your case.
So avoid movements causing pain.
Avoid bad postures in sleep. Avoid heavyweight lifting and strenuous exercise.
Take painkiller and
muscle relaxant drugs.
Apply warm water pad on affected areas.
Don't worry, you will be alright.
Hope I have solved your query.
Wish you good health. Thanks.