I am EXTREMELY tired but I can only fall asleep for 5 minutes. HELP?

Latley my mind has been "buzzin", sometimes I can't walk straight and I have been having panic attacks and depression, but my mom told me she had these exact same thing happened to her when she was little. But.... I took some cough syrup (Childrens tylonal: Multi-Symptom Cold) because I was heavily coughing and I took a little to much (Because I wayed over the dosing amount and I felt loopy. I ended up falling asleep for about 1-2 hours and woke up suddenly. My mouth was extremley dry, I was light headed, and my joints were sore. Soon I fell asleep again and woke up 5 min later. I just kept falling asleep and waking up in 5 min intervals. I had no trouble falling asleep and no apparent reason to be waking up. Whats wrong and how can I fix it?