Thanks for your question on Healthcare Magic.
I can understand your concern.
By your history and description, possibility of
musculoskeletal pain is more.
Your left sided
chest pain is associated with activities like pull, push etc. And this is characteristic feature of musculoskeletal pain.
Your right sided chest pain is associated with exhalation. This can be due to
pleurisy (inflammation of
pleura).
So get done chest x ray to rule causes for pleurisy.
If chest x ray is normal then no need to worry for lung disease.
Musculoskeletal pain is more likely in your case.
So avoid movements causing pain. Apply warm water pad on affected areas.
Take simple painkiller like
ibuprofen.
Don't worry, you will be alright.. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.