RCS with a worm or something

[Shaun]

I just noticed that my bigest reddest RCS has a tiny little white thing sticking out of her back. I thought something might be wrong with her because she developed an opaque pink stripe down her back a while ago (she use to be translucent), I thought it was something that just happened with age.
It only sticks out 1 or 2 mm.
It is white and cylindrical.
I don't know what to do? I found some info doing serches but no one seems to have described what I am seeing.
Should I seperate her from the rest of my shrimp?

[Neonshrimp]

If you have a photo of the shrimp this would be best to help you with the problem. Is the shrimp acting abnormal?

[Shaun]

Sorry, i'm not able to post photos. She seems to be acting fine, and now the "worm" is gone. I don't know what to make of this.

[Neonshrimp]

Could it have been a piece of the shell remaining after a molt? 1-2 mm is short for a worm that is visible to the naked eye. Well keep your eyes open and let us know if you see this happening again.