i have the exact same problem, i too have no bleeding or weight loss, i do have the diaherra though alot. I have had the worse time with fistula's and i have a permament c-ton in. After my last surgery everything was fine for about 2 months until i started having pain down there. It has slowly gotten worse and i also have the tailbone pain. I did get c-scan's and they found nothing of course and it's not infected they say. I am still looking for anwsers for the pain i have and it's very frustating.
as for root,
If something is wrong and you are feeling worse I would call, at the least, and leave a message for your doc or make an appointment. I always try to minimize myself and brush off pain and worsening symptoms but one time i did that i had an abcess. so the best thing is, if you think something is wrong call.