Running/training diarrhea

My problem is after the a little harder training or running i have diarrhea.
Have u this or simmilar effect ? how could i eliminate this problem?

Novadays i can not do any sport because of this problem.
I had plan colitis now i am on entivio.
And i am good enough not perfect but i am ok.

I have this problem when I'm flaring even if the flare is very minor, I'll come back from a long run and my bowels will explode. Immodium is a good band aid solution. If I use it everyday it messes with my bowels (constipates me which is brutal while in a flare). But for one-off occasions, like when participating in organized running events, I'll use it and it keeps me safe for the day.