Not sure if you have a loop or end ileostomy. For a loop stoma, that sounds quite normal. End stoma, not so much. That said, your output should lessen as your intestines heal and get used to their new arrangement. This process can take up to a year, so it's not a fast one.
You should also speak to your stoma nurse if you have one.
Dx Crohn's in summer of 2000. (Yay )
Tried and failed: 5-ASAs, azathioprine, 6MP, Remicade, methotrexate, Humira, various diets.
Had surgery Feb '13 - subtotal colectomy with end ileostomy. First thing to put me into remission in 13 years.
Had second surgery 10th July '15 to reverse the stoma and connect the ileum to the rectum. Feeling rough.