Hi Asher,
I'm new to the forum, I'm 41 years old and was diagnosed at 22 with Crohn's disease, I had a little boy in May 2013, conceived naturally and fell pregnant within two months. I had a normal pregnancy. I went for foetal assessments because of my age and then had a CVS test (testing of placenta tissue) as my blood proteins through the risk factor out, which I knew it would because blood work in a Crohn's patient is never normal. My son was born healthy and arrived early at 36 weeks. He is a normal little toddler and no IBD or anything. As far as I know and have read quite a bit, Crohn's is not hereditary.
I delivered by C-section and the anaesethist administered anti-inflammatory medications that did not agree with me it caused my haemaglobin to drop and I had to go back into theatre two days after as they thought I may have internal bleeding. My specialist said that although not impossible for a Crohn's patient to have children, whether it be natural or c-section delivery it is strenuous on your body. I have a friend that had two children with the same experience.
Having children is very possible, so don't worry your baby will be fine.