Hi guys,
Woke up this morning and after my shower I came down and took a deep breath in, and I have this pain in the top left of my back. It's exam period and I do get very stressed, and had a restless night last night. It's still there when I take a breath inwards and I can feel a pain in the muscle on my back, but I'm terrified I have a collapsed lung after reading online that other people have had collapsed lungs and not found out... I'm really worried