I have a pain in my back when I breath in it feels tight doctor told me it's an inflamed muscle I didn't believe him so I stupidly googled it and it came up with blood clot and one of the symptoms is shortness of breath and ever since I read that 3 weeks ago I am aware of my breathing to the point I think I'm just about to take my last breath then I think I'm going to faint I keep getting panic attacks because I think I'm dying, does anyone else have this problem and is just anxiety? I've had panic attacks before where I can't breath but this time I feel like I constantly can't breath