It is very much possible to get flukes that disseminate, also in the head, brain etc. Although I cannot be very sure this is what you have. If you pass them via feces and you are sure those are flukes, and you see the same stuff in your nose, then it is very likely that. There are ways to kill them, it is nasty. Systemic drugs are the only ones that reach them everywhere.
I have been looking into the Miracle-Mineral-Supplement therapy by Jim Humble recently, and heard amazing feedback to kill systemic worms with his protocols. He uses DMSO to drive the Miracle-Mineral-Supplement into the blood and elsewhere in the body with great success. He has several protocols, but the one I was thinking about is 2000 and 3000 along with the enemas. You can also use the Miracle-Mineral-Supplement in a spray, surely also good for the nose, they have used it with 100% success for staph and other infections topically.