Would a double-balloon enteroscopy with biopsy be useful to diagnose Crohn's disease?

Hi doctor,

I am a 21-year-old female with a weight of 99 lbs and a height of five feet four inches. I had symptoms of Crohn's disease without any visible lesions. I got dark blood in my bowel movements with constipation, diarrhea, urgency, nausea, abdominal pain, and weight loss. Every six to twelve months, I started to have a flare-up of symptoms that got worse to a point where I faced difficulty in doing my normal functions and I lost nine kilograms rapidly. I did an upper endoscopy, colonoscopy, pill cam and MRI. All the results came back normal. My blood test came back positive for ASCA, Crohn's antibodies, and I have calprotectin levels of 500 to 1100. My WBC was high pointing towards inflammation. I also had swollen lymph nodes and it got started again when my symptoms began. Are this blood and stool testing enough to diagnose Crohn's disease? What are other tests to be done? Will doing a double-balloon enteroscopy with biopsies help me? Can it be IBS even with slight signs of inflammation?