Yeah it was accidental, but its no big deal.
But I recognized it after the fact as well.... I have those ballades so cemented in my mind. I probably subconsciously recalled it while composing. Besides, when you make simple right handed tonal melodies, it is literally impossible to not have a few measures somewhere sound like something else.
But obviously, besides being no where near as technically proficient as a Chopin masterpiece, no one is ever going to accuse it of infringement.
And with all the unnecessary criticism I have taken, I am pretty sure all my songs are as original as they can be.
But thats a good ear. It is not obvious, unless you really listen to Chopin a lot.