Hi, Welcome this group. It can be caused due to medications or something more serious. Have you tried to pin point when you vomit? LIke me for example, I always vomited chronically within 1-2 hours of taking Imuran. We finally figured out it was the imuran, after a month. Also, I would see a GI doctor as well as your specialist doctor for your autoimmune disease.
DX: Wegener's Disease, Migraines, Diabetese Type II, PCOS, Lactose Intolerant, Benign Heart Murmer, Depression, Asthma, Asperger's Syndrome, Necrotizing Gramultous Inflamation in eye, A.D.D., Acid Reflux
Medications: CellCept, Prednisone, Tri Nessa, Percocet, Metformin, Prilosec, Protonix, Zantac, Advair, Cingulair, Albuterol, Calcium + Vitamin D