Hi Kitkat6478
Basically a Stoma is an extra opening that they put in with a collection bag when they have to remove the bladder, or significant bits of the bowel. There are quite a few organisations out there that offer really good advice and help including specialist nursing help and good practical support. they are collectively covered by the Australian Council of Stoma Associations - http://www.australianstoma.com.au/
I don't have one, but have from time to time been confronted with the [possibility and so found out as much as possible.
Regards
Sailor