My Head Keeps Popping And Its Like Crap. If You

My head keeps popping and its like crap. if you ask me what number the pain is. 1-10 is 10. I don't even know that to do. when my head hurt and pops, it get me from doing the thing I need to do. Knowing Ive got to do something about this. Sometime doing thing and my head pops I black out or past out. and Where I'm living at as a lot of things around me that I love to do. and If I past or black out I could get hurt very badly. So my question is- is that something I need to talk to a doctor about? What does that mean? What do you think it might be? Do you think something here is going on. Getting dizzying. I feel like throwing up. I have the craps. So much pain in my back.