Heterophyes heterophyes (Intestinal Fluke) - Hello, Do any of you have this parasite or experience?

... treating it? I was recently diagnosed with it and was treated with Biltricide but I am very worried that it may not be erradicated. What are the chances the worm is resistant to this medication or that it could have survived? What if it has moved on to my brain or to my heart? Will the medication still impact it there? I really really appreciate any answers