I needed to add my 2 cents here. Every single thing you described is exactly what I am dealing with EVERY SINGLE DAY! I have been on Lexapro since the end of June, so therefore, many of my symptoms are lessoned or even gone, but, before the Lexapro, I felt this all daily, and even now, I feel some of this. Definately sounds to me like anxiety.
I do have to say though, don't think 19 is too young for a heart attack, because it is not. I hope in all your visits to the doctors and ER that they checked out your heart.
Are you taking anything for anxiety now, or seeing someone for some therapy?
I know it totally stinks to feel so bad. I hope you start to feel better soon. In the meantime, feel free to come here for support. There are a lot of great people here!!
Dealing with panic and anxiety for 8 years off and on...right now more on than off. Major health anxiety as well!
New found issues with agoraphobia...working on that too.
I am NOT weak, I am just down right now. I am doing what it takes to get my life back!!!
Best Wishes to all...Tammy