TMI!!! Worms in poop

Ok so I'm 30wks tomorrow and I just went to potty and I noticed white worms in it, it looked like rice.

I never had anything like this before and I'm worried!

I dont have any symptoms but I notice my kidneys(back side)hurting since the morning. Now I do know where my kidneys are and the pain due to kidney stone problems but I did have some sharp pain in the left abdomen(not in kidney area and more on the side of my belly) everytime I changed side to it.

Has anyone else been through this??

Is it normal or should I call my Obgyn and let them know what's going on?