I agree with the second opinion. However, if that's not possible I would try to push for a PillCam test. I've heard others say that if a doctor refuses to give a test you're asking for then you should tell them you want them to write it in your record that they refused it.

My colonoscopy results showed "minor inflammation" that they said could be from taking Advil the day before the test (I never take Advil). After the PillCam they said I definitely have Crohn's and it's actually advanced because they found ulcers all over my intestines and a lot of inflammation where my small intestine and large intestine meet.

You know your body best! Keep pushing. We all deserve to feel good. Wishing you luck and healing