PS: I wouldn't try to convince any doctor that "isn't listening to you".
I am lucky in that I only had to show the doctor a photo of my Tapeworm to get a Praziquinta prescription. He was open to the prescription because I had previously tested positive for Ascaris and D.Fragilis.
To get the testing done the first time, I lied....I said I went on vacation to a tropical place.
Just say you were on vacation and haven't been the same since..... They seem to listen to that.