Thanks for your question on Healthcare Magic.
I can understand your concern.
Yesterday, possibility of
costochondritis is more in your case.
No need to worry for heart diseases as your all cardiac reports are normal.
Along with drugs, you should also follow these lifestyle modifications for better symptomatic relief in costochondritis.
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 or chest belt to prevent mobilization of painful areas.
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.