I get dizzy after I yawn alot and get this weird feeling in my chest like things are moving around but no pain then my feet feel as if they fall aslee?

Yawning.... ..is a normal response by the body to drowsiness or fatigue. You yawn more when you are tired or drowsy, in response to some medications including anti-depressants/anxiety/allergy drugs or if anxious. It is possible that you are hyperventilating with the frequent yawning, blowing off carbon dioxide, leading to the dizziness and extremity tingling. Not sure about weird chest feeling; see your doc!