Is anyone there I'm scared and need advice. My back started hurting in the middle like it needed cracked so I went to a chiropractor he popped something and I almost passed out. Since then the pain is radiating around my sides into my chest. I can't breathe it hurts so bad. I can't sleep unless straight up. I've almost passed out 3 more times. My right knee in the back has felt funny like I strained it or tight I guess. I'm afraid I have a blood clot!