Anxiety or heart problem?

Lately I haven’t been getting good sleep. I have bad anxiety so sometimes I’m up worrying bout random stuff or I just can’t fall asleep. Lately I’ve been up till 7am.

I’ve noticed that when I lay down I get heart palpitations, even when sitting up. I feel it in my throat. My chest feels tight n it gets hard to breathe. Sometimes I feel like I’m gonna faint.

Does this just sound like anxiety??

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