MY Cat Is Struggling To Breath...can You Help?

Glad to hear she's on her way to the vet, cause I doubt it is just a stuck hairball.  Those she would have puked them up and you'd find a gross gunk of hair somewhere.  Sounds more serious than a hairball.  You didn't mention her age. Hope the vet trip heals it. 

I agree.. Sounds like she has something caught, or esophageal swelling... But I'm not sure it's a hairball.  You said she "doesn't want to move"... If she's sitting with her chin point pointed up, than she's having serious (life threatening) trouble breathing, and you  need to get her to an emergency vet (preferably hospital) tonight... It may not be able to wait until tomorrow.