Thanks for your question on Healthcare Magic.
I can understand your concern.
In my opinion, you are mostly having
costochondritis. It is inflammation of costal
cartilage. It can give rise to knot feeling and also give rise to Crack sensations.
So follow these steps for better symptomatic relief in costochondritis.
1. Avoid movements causing pain.
2. Avoid heavyweight lifting and strenuous exercise.
3. Avoid bad postures in sleep.
4. Take painkiller and anti inflammatory drugs.
5. Apply warm water pad on affected 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.