I had an attack that was SO BAD once: I was just sitting on my computer, and then I all of a sudden felt this weird sensation in my brain, particularly on my right side, and it felt like my brain/head was going. Or canned air in a canister.
The next morning, I woke up, and probably a mix between me having the attack that night and due to the fact I didn't get much sleep, I felt completely slow and blah the entire day. Around June, the problem came back and is still here, but it's not as annoying as before. Nothing is really wrong, feeling like I dont belong, hangin around.