Is it normal to laugh like this?
So I was just sitting around and relaxing when my friend came over and was asking about some work assignments. I answered her normally and then I just burst out laughing. There was absolutely nothing funny going on and I had been feeling normal up until then. Once I started laughing I couldn't stop. I'd breath in deeply and calmly but when I let it out it became raucous laughter again. My chest was hurting I was laughing so hard, and I started bawling. Am I cracking up? I've never had this happen before and to be honest, it terrified me. I felt like I had no control over my actions. Does this happen to other people? Is this something I should be concerned about?