Sorry to not answer your question, but wanted to add:
You could have stool testing ordered. If you do, have it sent to a parasitology lab like this one rather than just your local hospital: http://www.parasite-referencelab.co.uk/
If it's something that shows up in the testing and is a common type of worm, simple treatment protocol is followed by referencing a manual and treating with what few effective drugs there are.