I am glad you and your doc are sticking with it and going to get to a diagnosis, and therefore a treatment plan.
I had all of the tests you had and a bunch more, but it was the pill cam that was requried for a diagnosis. The blood work was not showing much and all the other tests were all over the board. one said I had CD and the next said, 100% for sure I did not.
Of course we do not want this Dx but once I had it I could start to get it under control. Although you will read the stories for folks here who are going through tough times, this is not the norm. Most have it tough for years, get a Dx, struggel to get the right meds combination, then start to heal. After a bit they go into remmission. I know I was really scared when I was Dx ed, but with the meds, change in diet I got tons of energy. The energy allowed me to exercise. I have been on an up swing since.
If you have this DD, then you will have lots to learn. Diet, blood work, medication, insurance.....
This is a great place full of caring knowledgable folks who are here for you