u/No-Display-5565

does anybody else experience chest tightness, dizziness and hard breathing while outside on the sun and when temperatures are high? It makes me get panic attack immediately and I don't know how to calm down from it. I feel like my diapraghm and ribs are very tight too. I'm 22 female. Does anybody else experienced this? Could it be due severe anxiety and stress that has been going on for a long time everyday? I had problems with this last summer too.

I've been dealing with anxiety and stress for over a year and 8 motnhs now and I since then I've been having chest and ribs/diapraghm tightness and constant some difficulty breathing problems like my chest is full and so many other scary symptoms in chest and ribs area, I think that I'm stuck in a loop that I can't escape. I 24/7 feel like I can't breathe freely from some feeling in my chest. I did the tests and doctors keep saying it's anxiety but the tightness for me gets me so weak and like I inhale discomforted and idk how to stop this panic loop. Whatever I try to do, the tightness stops me and I'm scared to do physical activity because of it, even though I walk over 6000 steps everyday. How to get rid of this chest tightness and difficulty breathing? What can I do to stop this? I'm constanly stressed about the future because this keeps showing up everyday.
I'm 22 years old, female, 171cm tall, 52kg weight

I need advice from someone who had the same problem or anyone else who can give me the advice. I want to gain some weight because I'm naturally very skinny and it makes me very insecure because I'm also flat chested. I don't like ''side profile'' of my body, especially upper body (I put the picture) and I was wondering what can I do to make it better to not be like this skinny in side profile because no matter what I can't gain any weight. Idk if it's about posture too or what but I'm totally lost what to do about it. I'm 22 years old, 171cm tall, 52kg now I think. It's always been the problem for me and I'm not really sure what to do.

https://preview.redd.it/c52xrp7mzryg1.jpg?width=830&format=pjpg&auto=webp&s=102d163b9fada2489ab1b9a93d9c5f298d2f3cbd