Thanks for your question on Healthcare Magic.
I can understand your concern.
By your history and description, possibility of
costochondritis is more.
So follow these steps for better symptomatic relief.
1. Avoid movements causing pain.
2. Avoid bad postures in sleep.
3. Avoid heavyweight lifting and strenuous exercise.
4. Take combination of painkiller and
muscle relaxant drugs.
5. Apply warm water pad on affected areas.
6. Wear rib belt or chest belt to prevent minimal mobilization of affected segments.
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.