Last night I was having a panic attack &amp; was hyperventilating. This morning when I woke up, my chest felt tight &amp; sore with every deep breath. So I've been hyper fixated on my breathing &amp; how my chest feels all day. I've been basically manually breathing all day &amp; now I'm having another panic attack. I keep thinking something is wrong &amp; every time I think about it, I start to hyperventilate again. I need some comforting words to put my mind at ease. I've experienced this before, although it's been a while. I'm a 23F with no history of heart disease. I just need to be reassured that this just anxiety.