After a weekend of heavy drinking, I woke up in the middle of the night and had a terrifying experience.?

I am a 24 year old female and have been a heavy drinker for about 3 years now and had been drinking for about 3 days straight. I had my last drink around 10pm and woke up at 3 am to get a drink. When i went back to bed, I started to have panic attack symptoms. My heart started racing and I started to feel delirious. I felt like I was dying and fighting to stay conscious. I was in and out of consciousness for a few minutes and I just couldn't keep my eyes open, even though I was in complete terror that I might never wake up. I also recall feeling paralyzed and unable able to speak or talk. I was trying to move my hand and say my husbands name but nothing would come out (like in a nightmare). Please someone tell me what was happening to me. It was the scariest thing I've ever experienced and I want to know if I was actually close to death or just having a panic attack due to alcohol related anxiety Random note: I was hallucinating/dreaming about tarantulas. So recap, may main symptoms were: confusion, fear, delirium, delusions of impending death, sweating, heart racing, paranoia, in and out of consciousness.