Sudden poo after breakfast sometimes.

Sir / Madam I am 25 year old male . I need to remove my gallbladder in 2018 because of stones . After the operation for few days I have sudden urge to poop after eating I thought it was because of operation. But after that till now I have one problem which happens once a week or sometimes not that after I ate breakfast sometimes there was sudden urge to poop within 5- 10 minutes of breakfast that too was mucus stool which I cannot hold for long . In lunch and dinner no problem but mainly after breakfast . And after operation one more problem arises of smelly farts after eating whole day . I want to overcome from this sudden urge to poop please help . Now it was became my phobia everyday while eating breakfast same thing revolves around my mind . Causing distraction in my day to day life and study. Thankyou