Is it damp and humid where you moved? If so, this could have triggered the problem. Gosh, get away from the cigarette smoke, I can't even tolerate it when I am outside breathing the smell of smoke. I am certain this will only make it worst.
First , relax, take care of you, Ask your mother if the inlaws could please consider other non smokers by taking their smoke outside, there is no reason you should have to be subjected to the second hand smoke. Also, learn how to breathe by learning some very simple yoga breathing exercises and try cutting dairy products and sugar from your diet. I was diagnosed with adult onset asthma and I could not use advair, it made me jumpy and my breathing worse, I was using a rescue inhaler every 3-4 hours. To make a long story short, I am seeing a Naturopath Doctor and I am not on any medications, no Asthma since May 2007. See a good Naturopath, it doesn't hurt to try something else other than the usual inhalers, prednisone and other pharmaceuticals. You're too young not to try something else else. Don't give up!
Good luck to you.
Jan
I'm sure the cigarette smoking environment is not helping you. Some reliever medications can speed up your heart and maybe they can trigger palpitations.
Good luck.