1/ This appears to be mucus ropes but that does not mean you you do not have parasites. The only reliable test to do is Metametrix GI Effects - use panel #2105
2/ It is quite possible that you have other pathogens in the gut such as rogue bacteria or yeast - MetaMetrix will pick that up.
3/ You might want to contact shroom who is an excellent microscopist and posts regularly on Curezone.