I don't think my UC flares (no blood from the butt), but my IBS acts up. I get a lot of nausea, diarrhea, and vomiting during the first day or two of my period. And for the first time, it's acting up before my period--I'm due any time now and I've been to bathroom 12 times in the past 3 hours.
I need to be tested for endometriosis.
Last time I went on a BC, I flared for almost a year--definitely not doing that again, especially since IBD patients have a higher risk of blood clots even without BC.