Pain under left side rib

So this happened less than an hour ago, not sure what this was. I was sitting in my room just watching a film and then suddenly i felt a sharp abdominal pain on the left side of my body. At first I started to pain becuase I had spontaneous pneumothorax back in november and suffer from anxiety and i thought it was happening again. For a good 15 minutes, everytime i breathed in deep, it would trigger a pain of some kind. Eventually it stopped but it feels like it might start again. Keep in mind - I'm considered a 20 year old male, who's underweight and suffers from anxiety. The picture below is where I felt the pain. Might be off a mm or so. It's definitely in the left side and someone in the region of the bottom of the rib cage.

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