Feeling alone & scared :'(

So I woke up with this breathing issue like an emptiness in my chest and it seems to go away after laying down for a bit so I tried to get up again and I did and it came back like my chest felt empty and weird I have to either lay or slouch to kinda releive it but I'm so scared and alone so all of these negative thoughts came Rushin in like what if this is it for me, what if my parents come home to a dead me or something like that ugh I hate it and those thoughts make me cry but crying makes the breathing worse ugh. I'm so convinced I have some sorta heart/lung issue.

Deep breaths you will be fine, anxiety is scary you have to learn not to panic.

Stay calm

I'm sure it is but ugh I can't get rid the sinister thoughts.

That is the reason why CBT or some form of therapy would be good for you, It will teach you how to learn to live with this nasty condision