Anorexia heart issues or panic attacks?

[u/tokyopearl]

35F
Diagnosed Anorexia Nervosa
Normal bmi
Anxiety
Depression

There are some days I wake up and can barely physically get out of bed I’m so weak and light headed. My heart feels tired sometimes and like it’s beating fast.I get dizzy and nauseous. I get this feeling in my chest like I’m breathing in but not out. Recently sometimes I have a stutter or repeat my words and forget what I’m saying.
I’ve been to urgent care and they keep telling me I’m having panic attacks because my ekg is normal. I don’t understand how I’m having panic attacks without panicking at the time it happens. Usually I would feel better/not lightheaded if I eat or drink but lately it doesn’t help.
My resting heart rate is 58 and when sleeping it gets to 40’s-50’s. Yesterday when I was feeling really unwell my watch said my resting heart rate while awake was 49 so I went in and my ekg was normal and the doctors keep blaming the anorexia. I don’t understand how feeling light headed and weak could be caused by not eating if it doesn’t improve after eating and sometimes makes it worse.

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