I know this must be terribly upsetting, (as not knowing is the worst):but, Please don't freak out.
You'll need the energy to battle this, and since you've already started to treat it somewhat, keep up your research to identify the culprit. Also, be encouraged by knowing, that ther are many, many people out here heavily infested and totally freaked, looking for answers.
Have you gone into CureZone parasite Cleanse Forum?
I just read somewhere that Tapeworm cure is to fast for 3 days on pinapple. The bromlain in the pineapple destroys the tapeworm.
Eat pumpkin seeds, raw, soak them the day before(you can make hummus out of it). Garlic, turmeric, cloves.
Are you trying the Wormwood , Black-Walnut , clove treatment?
There are answers out there, and, I do sympatize: until you indentify it,it really is nerve shredding experience.
Take heart, be gentle on yourself
and attack the "uninvited guests"