Garlic/ACV- Take 2 cups of raw acv and 4-6 cloves of garlic and put in a blender on high speed for about 1 min.
Use 1 tablespoon per quart of enema water.
It really is difficult for me to comment on what it is that you may have. I think you are doing great to have killed all of those parasites in the last 3 months. I agree about the parasites causing the chronic constipation. That was certainly my experience as well. They can just paralyze the colon.
Last year I had the itchy butt. Not sure if it was pinworms or not. I think when a person has a heavy or longstanding infestation it takes quite a few months to get rid of them. parasites die in layers. So we have to just keep slowly killing them
The drugs I have not tried nor do I feel from research that they are more effective. People seem to have to take repeated and repeated dosages. Herbs are not liver toxic which the drugs are. I think your pin worms will eventually go, along with any other parasites that you may have using herbs alone.