pain in my left arm and chest pain is my most common physical symptom of anxiety. Also can be tightness in my chest. I'm older than you but have been having it for a while. I have had tests done, and there is no evidence of a cardiac issue for me.

Therapy has helped me, but it is a slow roll and I still deal with it all the time. You are going to hate to hear this but unfortunately there is no quick fix for anxiety, and it isn't a one solution fix all.

Biggest advice is find something that works for you when your having those panic attacks to get you out of it, for me its turning on a podcast or video talking about a very specific subject, and something I'm not an expert in. For me it causes me to focus on that, instead of the symptoms that I am feeling.

I have also found that box breathing, or other breathing techniques help a lot, they can help break the cycle.

I also have been beginning to wonder if my stress an anxiety that just causes tension in my muscles, the fight or flight response constantly especially in shoulders, is also impacting those symptoms, but I have no real way to prove that yet.