There are fiber gummies that Jan told us about. Phillips is the brand.
If you do need to have it removed you would have a permanent ileostomy vs a colostomy. You might want to read some posts in the Ostomy section here. There has been quite a few of us that had j-pouch failures and had our j-pouches removed or had them disconnected. If you have any questions asking there might bring you question to the attention to more of us.
The nurses told me to take imodium - generic is really cheap - as an appetizer and fiber, metamucil in my case, as dessert. The timing of when you take them really does matter. You can take up to 8 imodium daily so if what you are doing isn't working you might want to try taking them 3-4 times a day.
I hope things improve for you but if you do need to go to an ileo please know that it has helped many of us and we are feeling much better now.