Hair feeling dirty when it’s not?

My hairs been really weird lately, after i shower, it still feels damp in a way and greasy? but it’s not? idk if that makes any sense. i haven’t changed my shampoo or conditioner! it just feels heavier and like it hasn’t been washed when it has? does anyone know what i mean? i apologize it’s hard to explain! if anyone gets it please let me know your opinion, i really want it to get back to normal! i’m thinking maybe it could be because i’ve been swimming in my chlorine pool, but i would expect it to be normal after washing it? lmk!! thanks:)