I have noticed a couple times in the last few days that Olive will cry out when she has to go potty as if she's in pain. She'll then spin around like she's trying to get to her butt. I can't help but think it hurts her to go potty

She's also dragging her butt on the ground a little bit. I was trying to get a look at her butt but she keeps moving her tail in the way... Last time we were at the vets we were told she was worm free and I can't physically see any worms... I hope she's okay! I plan on calling the vet tomorrow, but I was wondering if anyone had any experience with this or advice...

Thanks in advance.