Panic Attack

Hi,

So today I went to the hospital due to a panic attack. I literally felt like I was going to die because I didn’t have oxygen in my body anymore, cause all my body was numb even blue in some parts. It’s late her weere I live but I can’t sleep. I am scared of sleeping and not having enough oxygen or hopefully not but not waking up. Anyone who has felt this or knows about someone who did, what do think? What did y’all tho?