Sounds like you're already trying some of the best natural therapies, although different brands can certainly give you much different results. Make sure the probiotic you're taking is strong enough. In my experience, many OTC brands were totally ineffective and scientific tests have revealed they often don't have the viable count they claim to have. In addition to the VSL3 mentioned above, you may also want to look into Natren and Custom Probiotics brands.
Omega-3 supplementation is great for helping control inflammation. Again, make sure you're getting a large enough dose per day. Pure l-glutamine powder has been shown to be helpful for healing the colon and controlling diarrhea. Regarding aloe, some juices have the laxative component removed. George's Roadrunner Aloe Vera juice is the safest brand I've found. Mucosaheal is a blend of naturals developed specifically for IBD and may be worth a try.
Dietary manipulations can play a large part in your ability to reduce symptoms and begin to heal. Check out the Specific Carbohydrate Diet at http://www.scdiet.org
. Other dietary approaches for treating IBD can be found in a multitude of digestive health books... Optimal Digestion, The New Eating Right for a Bad Gut, etc.
Before you consider surgery, I'd strongly suggest you check out Jini Patel Thompson's book Listen to Your Gut. As a Crohn's sufferer, she covers a wide variety of non-pharmaceutical, non-surgical methods for managing and healing IBD. Don't know where you live, but you may also want to consider seeing a gastro with experience treating folks from a non-pharmaceutical standpoint. There aren't many of them out there, unfortunately, but I'm considering traveling to see Dr. Ronald Hoffman in NYC. Check out his clinic's Web site. There's some great info their management of IBD patients there:http://www.drhoffman.com/
Diagnosed with ulcerative colitis spring 1999
C-scope confirmed UC diagnosis 9/18/2007
No explanation for right side pain and thickening of bowel wall
Maintenance dose sulfasalazine, back on a pred taper for first flare in years
Probiotics, l-glutamine and fish oil caps. George's aloe vera juice and Mucosaheal.