I'm really worried after what happened last night I was nearly drowning in a deep pool without realizing it until I almost ran out of breath. I managed to get out with some help, but I swallowed a lot of the pool water. Initially, I was gasping for air but felt okay after about 20-30 minutes. The problem is now I'm shivering, my left arm is aching, and it seems like I'm taking fewer breaths than usual. I'm feeling super tired and looking pale too. Is this something serious, or is it a normal reaction?

Normal,nothing to worry ok.