Naturolax A powder. Soft like paste?

I have anal ulcer and need to keep my stools soft. I do not have constipation as I eat about 300gms fruits, home food (rice and curry), buttermilk after lunch and dinner and drink about 4ltrs of water everyday and i can pass stools easily without any pressure. I initially took lactifiber, i could pass stools easily, but the stools were not soft enough. I have shifted to Naturolax A powder since Thursday night. I consumed 15gms powder on thursday night, 10gms on Friday after lunch and 10gms after dinner. So i have consumed only 3 times so far.  My stools were unusually hard today, i had to strain to pass stools and i had a few streaks of blood in the stools. I read on internet that Naturolax powder takes about 2-3 days to start working on the body. Is that correct? Is that the reason why my stools were hard today? Is there any other medication along with Naturolax powder just to make my stools soft like paste? Please advise in detail as this is mentally affecting me.