im 19 year old male...i keep experiencing breathing problems when im lieing in bed trying to go to sleep,my chest feels funny sometimes tight and it feels like i cant breath and i cant catch my breath for a few seconds at all, its is happening regularly now every night nearly sometimes 5 or 6 times,this might sound silly but its like when im trying to sleep nearly dreaming say it feels like im falling then i cant catch my breath or cant breath at all, its starting to worry me now i was in bed just i had to get up because its scaring me i dont no what the cause could be? or why it keeps happening