Talk to Gastroenterologist on Gastroenterology

Hello Doctor. I am a 16-year-old female with a 2-year history of persistent abdominal pain, mainly in the right lower abdomen, starting after waking up and recurring throughout the day. I also have nausea, frequent bowel movements, alternating diarrhea and constipation. Five gastroenterologists diagnosed IBS, but treatment did not help. A sixth doctor ordered a fecal calprotectin test, which was >2000 µg/g. Celiac tests were negative and stool analysis was normal except for stool color. Colonoscopy showed moderate chronic active terminal ileitis with nodular lymphoid hyperplasia and mild inflammation of the ascending and transverse colon. Biopsy did not confirm Crohn's disease but suggested possible early IBD. CT enterography was completely normal. I completed one month of treatment (Coloverin D, Digest Easy, Gastrobiotic, Linex, and Fonaspir) with no improvement, and my symptoms have become worse. Could this still be early Crohn's disease? What other conditions could explain these findings, and what further tests or follow-up would you recommend?