Hi Savannah, yes it sounds like she is colicky to me. I would walk her and trot her some can help to get things moving, will get her mind off of the pain, and may help push some gas out of her gut if it is spasmodic. Walking for 30-45 minutes seems to make a big difference if it spasmodic. After that let her rest for a while in a bedded stall with fresh water but no feed. I have found that after walking placing the horse in a bedded stall they will be encouraged to pass feces and and urinate which can help to relieve pressure on the stomach and soothe the pain, and if she passes feces, then she is most likely not impacted. Try giving an enema if you know how to properly and take her rectal temperature to rule out a possible illness or infection. Check her capillary refill time on her gum's, the blood should refill into the blanched area in 2 seconds or less. Her gum's should also be a light pink not pale and not a dark red. But yes I would agree, call the vet and just touch base with them to get their take o. the situation.
Best of luck to you! I hope she is feeling better soon.
Dan.