How long have you been battling this flare? It takes time to become anemic but if you have been ill, even moderately, it could happen. For me it took about 2 years to become both anemic depleted of B-12. I had a lot of bleeding in those 2 years so I wasn't surprised. A simple CBC to check for both anemia and B-12 should be suggested.
dx proctitis in 1987
dx UC in 1991, was stable until 1998
1998 started prednisone, asacol, pentasa, nortriptylene, ativan, 6MP, rowasa enemas and suppositories, hydrocortisone enemas, tried the SCD diet, being a vegetarian, omega 3s, flax, pranic healing, yoga, acupuncture, probiotics
2000 lost all my B-12 stores and became anemic
2001 opted for j-pouch surgery- now living life med-free