I am having trouble breathing for the last couple of days?

My good friend is a double boarded anesthesiologist. He went to three different doctors because of a similar "not being able to take a full breath" feeling. He knows the human body extremely well and was very surprised to find out..... just stress and anxiety. Drink lots of water and try not to focus on it. The worry can just add to the problem. If you are truly obstructed your color will change and eventually you'll pass out from lack of oxygen. If you're able to exercise all the time you're probably fine.