Cat ate plastic 3 days ago & now keeps throwing up

So my cat ate a good size piece of plastic wrap type stuff 3 days ago and now yesterday & this morning he’s been throwing up brown stuff & just now it was like a orange type color with little chunks of idk what in it? Could this be caused by that plastic or is his stomach just upset from maybe his food or something. Idk what to do and we kinda can’t afford the vet right now