Hi Awnie1301, I believe that the more severe the AS flare, the more likely I will flare in other ways as well such as uveitis, ulcerative colitis, and skin issues.
I understand there are some treatments for AS that also address IBD. some meds have some correlation with gi flares. but it sounds like you don't have full IBD. but still worth talking with your doc about med choices.
To me, I think mucus is a early sign of UC flare. UC is horrible. so I take it seriously and double my anti-inflammatory lifestyle actions such as:
diet (reduce inflammatory foods and for the gut eliminate seeds, broccoli/cauliflower, raw vegis. reduce processed sugars and processed flour/foods. increase anti-inflammatory foods such as turmeric, ginger.)
sleep -not too little, too much.
activity - not too little, too much.
stress - not too much
hope that helps.