Whenever I get cold I start getting chest pain. It can be any situation like sleeping at night as the temperature falls in the room, wearing a wet t-shirt for some time, not being dressed properly in the cold weather. The result is always the same, I get terrible pain in my chest, every breath hurts, the deeper the worse it is. It only goes away from one thing I cover up, put on a sweater or jacket, even if the rest of my body feels fine, I need to feel really warm and then I recover and the pain goes away. This started happening about a year ago. I really don't understand it. I don't even get that cold. The rest of my body feels fine. It's like I have to always maintain a high temperature around my chest.
I'm a 31 year old man. No major health problems. Exercise regularly. There's some stress in my life but I generally manage it. I am pretty skinny (5'7 at 135lbs) and have been all of my life. I've been going to the gym so I'm relatively muscely. I don't know if it's body composition, but it feels strange that just my chest can cool off so much to cause this pain. The pain is bad, it makes me worried about going to places where I might not be able to get warm when I need to (like camping). Why is it happening and what should I do? Why can't I find any info about it on the internet?