The_little_didgee, I hope that your colonoscopy returns a negative result for Crohn's Disease.

If it is positive then there are a number of non-surgical therapeutic options. This is something that I know a fair bit about - a dear IRL (now deceased) friend of mine lived with Crohn's Disease for many years.

As geis has pointed out, 5-aminosalicylic acid and steroids can be effective.

An alternative class of medications are a group of genetically-engineered antibodies which block the action of a protein called TNF. TNF is thought to trigger the inflammation which is part of the IBDs. Examples of them include Adalimumab and Infliximab (there are others).

If your Crohn's Disease Dx is positive, they are an option which is worth discussing with your clinical care team.