My child will not swallow her spit most of the time

My daughter, who just turned four in, started a new daycare three weeks ago. Everything seems to be going fine there. Three days ago, on the weekend, she started asking her father and I numerous times a day if she had hair in her mouth! Now she is to the point where she won't swallow most of the time. She wants to spit unless we look in her mouth and tell her that there is no hair in her mouth. I have searched the web and can not find anything about this, I am to the point where I feel like I need to take her to a doctor. Please let me know if you know anything about this!!!