If your insurance won't cover the Humira, try contacting Humira's Patient Assistance Program. They will give you advice on how to get it approved, and may provide free meds if you are denied.
Granted, I have Crohn's-colitis, but I was given 3 months of free weekly shots, after my insurance denied my specialist's recommendation that my dosage be increased from once every two weeks to weekly. And I was approved for a year's worth free, they just send it quarterly. Unfortunately, Humira stopped working for me. But while it did, I came closer to remission than I ever had before, I felt great.
Abbott seems very motivated to get Humira out to consumers for these diagnoses, so check it out. You can start with the web site, I think it is myhumira.com.
Dx Mild Proctitis 7/06 at age 33, Dx Severe Pan Colitis 5/07, Dx Crohn's Colitis 10/07
Failed Asacol, Lialda, 6-MP, Canasa, Rowasa, Entocort, and Remicade, weekly Humira
Late 7/08, down to 5 mg pred, and big flare, Humira failed
2 week hospitalization in 8/08
Now on Pred 25 mg, cyclosporine, percocet, xanax
Surgery scheduled 10/10/08 to get rid of this colon