All my test results have come back normal, and my GI won't diagnose me until something shows IBD on a test result. I pretty much demanded medication as I just got sick of being sick. I was in an awful flare and both my GI and GP were booked solid so I saw a different GP in the same clinic. This GP was awful, he took one look at my file and said that I have IBS and I "look depressed" and he then tried to give me anti-depressants. I put my foot down and said NO. I said I am depressed, but only because I'm ill and nobody can tell me why! Make my guts better and I guarantee the depression will be magically cured. I then asked to try prednisone, and he said yes, with the condition that I try some IBS meds first. I tried the IBS meds and they did nothing, and then I tried the prednisone. Like you said, I felt healthy again! In fact I felt like wonder woman, ha ha. I felt so great, had so much energy, had no symptoms - it was wonderful! And all my symptoms came right back with a vengeance after I stopped pred.
So I went to my GI and told him about how pred affected me, and he said he would put me on Entocort, which is a milder steroid - similar to pred, but much fewer side effects. I was on Entocort for 7 months and that put me into remission. Now I'm on Asacol which is basically a maintenance med for remission, so Entocort got me feeling well and Asacol is keeping me feeling well.
So yeah, I just had to put my foot down and demand some treatment, and I got it. (I had to ask for Asacol too, although it was my GI's idea for me to take Entocort, based on my good reaction to pred.) Doctors don't know everything and most of them certainly don't know what it feels like to have an illness like this so sometimes you have to stand up for yourself and tell your doctor what you think you need. The worst they can say is no, right?
I'm normally a pretty meek person but I am glad I put my foot down and asked for medications.
I'm sorry to hear the prep affected you so badly! Did you get dehydrated, is that why you passed out? I have done prep twice and it made me very badly dehydrated both times and I needed IV fluids, not fun. I really hate prep too!