I have been on Humaworm for about 8 days now and started out with similar problems as you have described. I was not noticing any abotmalities in my waste for the first week but having to deal with the uncomfortable side effects. By that time I had not had a bowel movement in several days and was not feeling so hot. That night I made sure to really relax drank A TON of warm/hot liquids and finally went to the bathroom to find that my stool was riddled with various types of worms.
So just because you are not seeing anything now, espesially if your constipated, doesnot mean there is not anything going on in there. Be patient make sure to drink enough water and it helps to eat easily digested fiber rich foods.