I have the Colic thread below, but After calling a vet this is quite a distance away, since ours is MIA, and talking to them - we think she is actually choking. That explains the mucus and gagging.
She is still gagging every 5-10 minutes and acting depressed in general.
I am not sure rolling and sweat come with choking, but. . .
They said they can come out, but that is was best to get it a bit longer and see if it resolves its self, assuming it is choke, because it usually will. . .
So I'm going to call them to come out a 2:30 if she is no better
~ ~ ~
You can read her symptoms here:
Read more: Colic right now - help