What is it with IBD specialists thinking that a normal CRP = remission?! This is a pet-hate of mine.
My CRP is nearly always normal and is often <1 despite the fact that I'm in a really bad flare. I met a new consultant a few months ago who thought I didn't have any inflammation (based on my CRP result) until he scoped me and saw all the ulcers and redness in my TI, then afterwards he told me that there is a subset of patients who will have a normal CRP value despite having extensive inflammation. You can go blue in the face telling them that you're flaring but they just don't listen because the CRP result is normal.
Did you tell the nurse that you're still getting symptoms? You could request a Calprotectin test, or ask if they tested your ESR levels. I hope you can get them to listen to you, I feel your frustration!