Chest pains and Thc edibles

So I started smoking cigs and weed around 16 and never had problems until the last 2 maybe 3 years. I'm 22 now and I don't even smoke weed anymore I take edibles and I have been for about 2 years now. Well whenever I'm not high I have serious heart flutters and chest tightness. But my lungs are pretty fucked, I need to quit cigs but that's a whole other story. I just wanted to see if there's anyone who's dealing with the same thing. Basically I'm having panic attacks when I'm not stoned off my ass nowadays. At least that's what the hospitals say when I've went.