Are you sure ? Or you "think"
I have one suggestion for you (from my experience)
I used to "think" that i was constipated because like you when i was younger i used to eliminate feces regularly and they were well formed and with a good water content.
And later in my life, it happened to me that i was constipated and when i was eliminating feces, they were small and dry.
If you read most of the hygienist and raw foodist books they claim that it is because eating junk food produces a lot of waste which is difficult to eliminate and then there is the myth of mucoid plaque etc...
That's what i believed too after reading tons of books from "experts" of the subject.
No let me give you my thoughts about an underlooked topic : parasitic worms !
Since i have killed many adult parasitic worms in my small intestine and colon, the constipation is gone !
Eating primitive food is better than eating industrial transformed foods.
But if you have too many parasitic worms in your body, the circulation of feces is slowed down, the waste is not evacuated in time and the theory that waste which stays in the colon too much time can enter the blood and cause all kinds of "diseases" (crisis of elimination) is in my experience true. (for example headache, bronchitis, sinusitis, kidney stones, arthtritis, gout, acnee, etc...)
Go on war against these insects, don't worry about bacterias, they will always colonise your body if you eat your food rather than feeding parasitic worms.
My thoughts...