Is this an absence seizure?

So i get this thing...... I'll be carrying on my business, and I'll think a thought or someone will say something to me, and it sounds so strange in my head. i feel really woozy, and i have to fight not to pee my pants. I either have to grab onto something or sit down. As this is happening, i think about random words, pictures, or phases in my mind and they seem so foreign yet so familiar. I don't mind them so much, I just wanna make sure i don't have a brain tumor or something. thanks to anyone thats helps.