Thanks for your question on Healthcare Magic.
I can understand your concern.
Yes,
costochondritis can cause similar kind of symptoms.
No need to worry for major heart and lung related diseases because your all reports are normal.
Follow these steps for better symptomatic relief.
1. Avoid heavyweight lifting and strenuous exercise.
2. Avoid movements causing pain.
3. Avoid bad postures in sleep.
4. Take painkiller and anti inflammatory drugs.
5. Apply warm water pad on affected areas.
You will mostly improve with all these.
Also avoid
stress and tension if you have because they can also cause chest pressure.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.