I don't know what kind of parasite it is, but I want to encourage you to keep trying differnt things for getting rid of parasites. Many of them are microscopic and can't be seen with the naked eye, so because you didn't see anything doesnt mean it didn't work... maybe you need something different to work for what you can see.
Humaworm can't be beat for freshness and cost. I understand Barefoot here at CZ sells one too. There are numerous parasite cleanses - I know of people that have had success with Colonix, and then there's one I like that is made by Nature Sunshine Products, ParaCleanse, 3 boxes with 20 packets each of chinese herbs are used, with a 10 day wait between boxes. It can be purchased at discounted prices on line. These cleanses are designed to kill worms where ever they are in your body. My sister got rid of several kinds of worms including several Tapeworms using ParaCleanse.
Garlic is a good parasite killer. Spices like tummeric, sage, cinnnamon and cloves kill them too. Aloe Vera juice, oregano oil, green walnut hull tinture, Wormwood are good. Try fasting on fresh pineapple for a couple of days... that kills some types. These are just a few things that can be done to kill them, there are many more. Bromelain helps digestion, but breaks up worms when taken between meals.
When I learned parasites were a possiblity, I cleaned up my diet, and no longer eat unhealthy food. This creates a unwelcome envirement for them. parasites thrive when we eat refined Sugar and junk food. There are healthy substitutes for a lot of things.