When i woke up the left outside side of my ribcage area hurt to take in a deep breath. why may that have happened. now i feel like i can't take in a deep breath even though it don't hurt anymore?

Rib Pain: There are many things that can cause this type of pain. The most concerning is that you may have had a pulmonary embolus. This type of pain in the chest is called pleuritic - and can also happen with infections, chest injury, and the accumulation of fluid in the chest. As i stated above, it can occur with blood clots in the lung - and since that is life-threatening you should see and md today.