For the past two months I’ve been dealing with a crippling anxiety that is hard to describe.
My mind is not racing, there are no worries or anything necessarily that I’m thinking of. I will be going about my regular day, but then all of a sudden, there’s a crippling feeling my chest, my heart is racing, I feel light headed, my hands begin to go numb. I feel exhausted even though I had a good night’s rest. It all comes onto me at once. It’s almost like the feelings you get right before an anxiety attack, right before you’re panicking and you can’t breathe and you’re shaking and can’t move. Except, I never have this “anxiety attack”. It’s like I’m going up a roller coaster and the car gets stuck midway up. This lasts hours upon hours and it feels like I can’t move. 
Nothing I have tried helps, at least in a timely manner. Whenever I’m busy, I can step out and take a break, but the coping skills are never long term. I’ll be better for a bit, and then it comes back.
I’m asking and I’m desperate mainly because this is affecting my job. Almost every day for the past two weeks I have had to be sent home because I can not function as a human being or do my job in this state. My boss is very understanding, and he lets me go home, but I hate that this affects my job performance and I’m scared I may be fired if this is not resolved.
I am 19, I am medicated and see a psychiatrist and therapist. I have discussed this with them. My psychiatrist has prescribed me a fast acting medication to take as needed when this happens, but it’s effective to a certain degree.
I am begging anyone to help with any information, tips, or experiences they’ve had. Thank you with peace and love.