Inflamed Rectum? Proctitis?

Over the past 6 months+ I've encountered unusual symptoms along with my IBS.

(TMI)EVERY bowel movement during this time period is accompanied with mucus whether it's directly in the stool or on the toilet paper during clean up. Other symptoms include a feeling of difficulty passing gas (feels sort of like an obstruction), pressure in my rectum, and a burning sensation in the rectum after the bowel movement.

I've mentioned these symptoms to my GI doctor and he prescribed my Proctosol-HC but it hasn't helped at all and I feel as if he's not taking these new symptoms as seriously as I am.

Has anyone encountered this and have and advice?

Thanks!