Thanks for your question on Healthcare Magic.
I can understand your concern.
Since you are not improving by painkiller drugs, we should definitely rule out cardiac pain in your case.
So first get done ecg and 2d echo.
If both these are normal then no need to worry for heart diseases.
Sometimes, only drugs are not useful to relieve
musculoskeletal pain.
You need to follow these lifestyle modifications for better symptomatic relief.
1. Avoid movements causing pain.
2. Avoid bad postures in sleep.
3. Avoid heavyweight lifting and strenuous exercise.
4. Apply warm water pad on affected areas.
5. Wear rib belt and sit with proper chest and back support.
Don't worry, you will be alright with all these.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.