IBD ? Unremarkable tests, still in pain

Since the end of April I've had a full-pressure feeling in my lower right side that started with some intense sharp pain. Thought it was my appendix because of how debilitating it was just to sit and breathe at my desk,, but the CT scan was fine, was told I must just be constipated and discharged from the ER. Now its been over a month and I've lost 15 lbs now, sleep all the time, and still get sudden stabbing pains like someones inside my abdomen trying to cut their way out, with a constant pressure that has not gone away--I can't push my stomach out as it already is to its fullest, and I haven't felt like I'm able to help push my bowel movements out. My stool has changed, I've been having a hard time going but get the urge to often. When I'm able to make a movement its been loose with mucus and recently blood, and very little is even produced Had an MRI enterography last week but it came back fine too. GI sent me for more bloodwork, stool sampling, and I now have a colonoscopy/endoscopy set for this coming Monday It has been tough not feeling like myself without any answers from the tests I've had already. GI suspects its Crohns and said I wouldn't be the first patient of his who didn't show on an MRI and of course I don't wish anything serious to show on the colon/endoscopy either but if nothing does, that would somewhat suck too as I feel a bit crazy. Has anyone had a similar experience? Thoughts or advice Thanks !

i had a very similar experience. it began with excessive red blood in the toilet. initially, there was no pain. The bleeding stopped in 4 days and I was fine. I saw a colon/rectal doctor in December of 2017 and after a thorough exam he suspected it was a broken blood vessel, & scheduled a colonoscopy in three months. I was fine for 4 or 5 months. I put off the colonoscopy. Then I detected blood again and had some pain and discomfort. I took a cologuard test. It came back positive. I scheduled an immediate colonoscopy. Everything was fine. Then the pain increased and it was nearly unbearable. I made an appointment with a gastro doctor. The only thing that helped was taking the medication, Bentyl. the pain & discomfort continued but the bleeding no longer occurred. I saw another specialist in December of 2018. He thought I either had Crohns or a tumor. I had an extensive blood test. There no problems that showed up. I was feeling good so I stopped worrying. I haven’t taken any medication in 3 months . It is now June of 2019. Hope this helps you.

While waiting for your colonoscopy try some anti-gas tablets available without a prescription. Painful gas often gets trapped.