Illness/Sickness: Parasite cluster? Help!

[AG9]

I'm so scared, I thought I had nematodes but now there is a big cluster on one of my axolotl's poops. Did it come out of her? Are they converging on the poops to feed? I'm so afraid. I siphoned out the big cluster but little ones are still loose and around. The cluster was dime sized. She isn't looking skinny or anything, but I'm worried about parasites. Any help is appreciated.

 

[Blackbun]

What have you been feeding her?
Are you certain these are living worms (nematodes) or maybe string like threads created as white particulate matter from her faeces dissolves or disintegrates in water?

 

[AG9]

They are moving. She eats red wiggler earth worms