If you have sharp chest pain that gets worse when you breathe in and out, and is accompanied by other symptoms such as a cough and breathlessness, it may be caused by a condition affecting the lungs or surrounding tissue, such as: pneumonia – inflammation of the lungs, usually caused by an infection.
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Please practise breathing exercises.
Try breathing into a small, brown paperbag. Deep breaths. Inhale with your nose, exhale with your mouth.
If the chest pain persists, remember what happened before it started. I experienced having intense chest pains that I thought I’m having a legit mini heart attack or stroke. It turns out I had muscle strain in my chest area due to moving heavy carts all afternoon.

is there a doctor here? or nurse or whatever I have had breathless and chest pain since the afternoon, and I can't sleep. What should I do? it's something wrong with me?