it happens any way that i sleep, and even sometimes when im not asleep i cant breath well and my heart beat is wired, not really faster but i can feel it thumping alot harder.
From what you describe, it could either be a sleep-wake transition disorder (sleep paralysis), or an obstruction from breathing that makes you wake up violently. Does it happen when you're on your back? If so, try sleeping on your side or stomach. Are you waking up refreshed? Are you having problems with focus, energy or memory during the day as a result of these episodes? Do you suffer from anxiety or panic disorders? If the problem continues, you should see a sleep doctor in your area.