I am a 19 yr. old female. I occasionally smoke marijuana and I smoke cigarettes daily. Recently, I have been smoking marijuana more frequently. Lately, when I get high, loud sounds bother me, I have sudden trouble walking, dizziness, loss of balance and loss of coordination, sudden severe headache with no known cause, chest pain, its hard to breath, my throat feels like it starts to close, and my heart beats really fast and hard....what's going on?