Dear Renae, 

It is difficult to tell exactly from the photo, but does the worm have many "legs"? When touching the worm, does it curl up in a small circle? If "yes" to these questions, I think your worm is actually a millipede. Here is a UMN Extension article with more photos and information about millipedes: https://apps.extension.umn.edu/garden/diagnose/insect/garden/relatives/medium/millipedes.html

If there are many millipedes, I would recommend removing them to protect your plants' health. They may eat the roots of potted plants. You may wish to remove them to your compost bin or garden – they are very helpful at decomposing organic plant matter. 

Good luck!