is yaoi considered porn?

i quite enjoy reading yaoi being it with some sex scenes or mainly smut but is it the same as watching porn? Now, i don't know much about porn but i beleve that it doesn't have any plot (except for porn movies), it's just straight up fuking but with yaoi, the great majority of the time ther's some plot. I don't get excited by reading yaoi, I just enjoy them like a story with drawings. So i want to know if every time i'm reading yaoi is like watching porn or not (not that it's wrong to watch porn but just to know).
thankss