What is wrong with me?????

I do not understand what in the hell is going on with me.  I cannot sleep.  I am aggitated.  I am cranky.  I feel numb yet I feel like I could claw my whole body because it feels like every nerve is on edge.  I had to leave work early tonight because I could not stand to be there anymore.  I got home and was better for about an hour then it hit me again and now the silence is killing me.  I can't sit still.  I feel like I have got to be moving constantly.  I have been sitting in my room talking to myself just to hear a voice.  This has GOT to stop.  I can't continue on like this.  I finally got an appointment to see my old counselor.  I can't really afford this right now but it feels like life and death to me so I don't really care.  Why is it that when I am feeling this way that it seems like everyone just does things or says things to get under my skin.  Are they trying to push me over the edge or drive me nuts or what?  I really don't want to snap on anybody but I have a few times.  All I know is something has got to give and soon.