Dog ate rubber ball pieces 3 weeks ago

[arrowdog]

my dog Arrow, (a 9mo old shepherd lab) ate about half of an orange rubber chuck-it ball on April 6t. he threw up the next day, but otherwise seemed fine. pooping normal, eating normal, no more vomiting. hE was neutered on the 17th and has had antibiotics. Yesterday morning he regurgitated is (undigested) breakfast, and today he threw up again prior to breakfast and a large chunk of the ball came out. Everything seems norma, but we were a bit concerned about the repeated vomiting... pretty sure the ingested ball was in pieces. Generally I would just wait it out as it would pass in is stool but the vomiting was a sign concern as tat ball ad been in there near 3 weeks?
Thougts?