Advice on anal glands

Liana • Born in Colorado, living in Ontario, 09/14/2013❤️
Have you ever taken your cat to the vet to get the anal glands squeezed/drained?  If you have what happened when you got home??  I'm trying to figure out what's normal because this is my first pet.  Her poo is different and she's dragging and licking a lot and yesterday her back was twitching.