Please read? did i have a breakdown and what to do next? :S?

I would see a doctor and tell him about the bad headaches, the joint pains, and the sudden fatigue. There could be a physical cause for those. It doesn't sound to me like you had a breakdown, but the episode caused a lot of anxiety for you so be sure to tell your doctor exactly how you felt. I would start with a doctor and rule out any physical cause first.