hi, im 20 and a casual smoker i guess you could say. I've smoked from a bong a few times, but the other night i had the worst panic attack ever. I've already read about panic attacks from marijuana so i understand that. I've just been having difficulty breathing ever since the incident. It's been about 3 days since it happened and i feel like i have to manually breath or else i'm not getting enough oxygen into my lungs. I have no trouble breathing in my sleep so is this just a mental thing since i'm going through shock still or do i need some medical help or what?