hello Sunset,
i know how you feel. I also feel short of breath but the chest x-rays all came back normal. I just think that at this point I am focusing to much energy and thoughts on my breathing. I wish I could stop doing it but I cant. I wish you the best, I have been dealing with this for over 2 months now. But, I look at it this way - i know things will get better - it just takes time. God Bless you.