That is very scary and overwhelming. First, I hope you have a gastro who specilaizes in crohn's. There are alot of meds and therapies out there. You will just have to research and try different ones. Sometimes we feel like nothing will work., but have faith. I understand the guilt, but really, this is something out of your control. You will need your family's support and understanding. I too have three kids (7, 15 and 16)and it is very hard on days when you feel too sick to get out of bed. Not to mention, I also teach. I recently had a re-section and am still healing. My pain is better, but the fatigue is already coming back along with gas and D. There are times I just want to throw my hands up in the air, but then things get better.
Just hang in there and know that you are not alone.