IBD? crohns?

Ok so I am getting it looked at by doctors but they can't work out what's wrong with me ok so I originally just went to a GP and they got me to do a bunch of tests and it came back as possible Crohn's disease and so we went to a specialist and they got me to do more tests while they treated me for crohns and the treatment was working but all the tests were coming back negative saying no I don't have crohns and this was over the last 6-7 months we are now going to more specialist to see if they have any clue but within the first 2 months before I got medication I lost 15-20 kg I had a low red cell count of 75 and it's meant to be about 150 ish I couldn't keep a lot of food down and when I could I couldn't eat that much I had excruciating lower abdomen pain I am on high doses of pain killers and that really all the main symptoms umm but yea if any of you have had something similar or have a suggestion at to what it could be that would be amazing but like I said I am going to see more doctors in 2 weeks or so but yea thanks