For the Ivermectin, follow the hyperinfection schedule of 7 days on, 2 days off, 2 days on, etc., as noted in the protocol.
If you live in the US, suggest you take the veterinarian cattle suspension formula (Agrimectin, Ivomec, or Durvet Ivermectin) or the horse paste (several brands) in lieu of Ivermectin (Stromectol) tablets, which are pricey.
Dosage & ordering info for Ivermectin & Albendazole are covered in the protocol.
There's an chance you might be co-infected with scattered Tapeworms (Cestodes). Some of your symptoms, especially the size of the larva you describe in the genitourinary area, point in that direction.
Tapeworm larva can migrate out of the GI tract & encyst in any area of the body. They're often mistaken to be pinworms, which are a different type of parasite (Nematodes), & require a different drug protocol.
Pinworms are barely visible, tiny thread-like worms that don't disseminate & encyst throughout the body as in your case.
If after 2 treatment cycles of Albendazole & Ivermectin, you have no improvement in your symptoms, suggest you try the Tapeworm Protocol: Niclosamide, Praziquantel, & Albendazole: http://curezone.com/forums/fm.asp?i=1602094#i.
Hope this helps you in your parasite battles!
Good luck & keep us posted on your progress. Feedback helps everyone on the forum.