Had an anxiety attack which had me hyperventilating for over 20 minutes. Thought for sure i was…

Had an anxiety attack which had me hyperventilating for over 20 minutes. Thought for sure i was going to pass out. My mind has been so out of order since then. I didn’t know my surroundings during the attack and don’t recall much of what was said to me. Now i feel terrible, 4 hours later. Still can’t think straight. And I’m exhausted.