i saw this post online about how this guy went to sleep and had a dream that felt like it lasted 9 months and was insanely realistic. The comments were flooded with people saying they had similar experiences 

I saw this earlier today and I’ve had 2 full blown panic attacks over it, am I in a dream right now? 
If I go to sleep right now will I have a similar experience? I’m terrified of it. 
I have no clue what to do, or how to cope as my anxiety has only started to get bad over the past 3 months. 
How can I make this feeling of absolute terror go away?