I was in your situation and decided to divorce, despite my older age, because frustration and emotional damage do not allow recovery. Infidelity to a sick spouse is not just sexual infidelity but mostly an emotional matter. At the same time, it is a significant decision in life, with emotional, social, and economic consequences. If you have close friends and family members with whom you can share intimate secrets, it is highly advisable to hear their opinions. I encourage you to have a well-planned conversation in a relaxed atmosphere with your husband. The conversation is essential for you, even if it is not pleasant. You are still a young woman, and it is necessary to know that Crohn's disease is not incurable. In the attached link, you will find recommendations for treating your condition.
Link: Crohn's disease, Ulcerative colitis, IBS, and IBD - Bowel & Colon rehabilitation, by Self-Healing Natural Medicine.
https://www.sf-healing.com/page/122 (Copy & Paste)