Help?

I'm not feeling exactly safe with myself.  I just experienced a ridiculous mental breakdown.  Like.  I don't even know what triggered it, but I can tell you it started with me crying uncontrollably and falling halfway down Nathan's stairs.  He had to carry me the rest of the way down.  He didn't know whether to laugh or cry with me.  I couldn't even take myself seriously.  But I'm kind of scared.
I still want to cry.