Hello & Welcome!
"Question 1: Is candida (yeast) a parasite or a bacteria or a fungus?"
70428 did answer the question correctly about Candida existing in our bodies. To add to this, Candida can turn into a parasitical fungus. The word "parasite" isn't limited to worms/protozoan. Parasites can include bacteria too. There is a post that I did comparing worms & molds/fungi that might help give you a better understanding.
"Qustion 2: The parasite medicine claims to kill candida, yet I keep getting itchy yeast infections while on it. Any idea why?"
What you've described is what I like to call, upsetting the balance within an imbalanced health state. When co-factors are present this can easily happen. You've more or less woken up a sleeping giant and it is reacting. Remember, all living things no matter how tiny it is, it has an intelligence within and if you try to kill them they will fight back or find ways to hide. Although you might be killing off parasites, there is a possibility that the Candida may need a stronger substance.... hard to say because it is a delicate balancing act.
Question 3: Would collodial silver kill yeast? (kills bacteria - back to the question of if candida is a bacteria.)
This depends on the colloidal, I think. Some store bought brands can be a problem because of the bacterium contain within them via using contaminated materials. (I think I placed a post on the P Forum years ago about different colloidals, because someone wanted to use it in their nose for parasites.) Pure colloidal is suppose to help -- there is a Colloidal Forum. Again, I think this would depend on how large your Candida problem is -- is it external or internal?
"Okay, so between parasite medicines (about 2-3 weeks) I took a lot of colon cleanse stuff and saw a lot of white nut looking things in my stool.
Qustion 4: Parasite eggs or candida or some other weird parasite?"
Do you have any pictures? It may help. Are they large, small, ovoid, round?
"Then the really weird creatures...these things were about an inch long and the width of what you might make a thick pen stroke if you drew a line on a paper. Coming off them were bunches of filament-looking leg-like things. The 'body' was reddish and the leg-like filaments were too numerous to count, almost translucent.
Question 5: Has anybody seen these critters? What they heck are they?? The are like ALIENS! Having a name for them might help..."
Not sure really, especially with the legs. The thing about "parasites" is that there are literally 1000's!!! Pics might be helpful, but then again I'm not a parasitologist.
"Thanks to anyone who can help with any of the above question."