Audreys~I have an ostomy now, but I've had a few resections over the years! The doctor will do what is best for you...they are very experienced there and will take good care of you...they use the latest in technology:)
I agree with Nanners, call your surgeon or your family doc for something to help with anxiety...it will help!
During your pre-op the WOC Nurse (ostomy nurse) will probably mark your belly for an ostomy. It is standard when the doc isn't sure what they'll find and it is BEST when you are marked since an incorrectly placed stoma can really be hard to care for
Just think how much better you'll feel after your surgery...it is amazing