Mucas plug?

Tiffany • Christian. Mother of 3. 3 living and 1 angel. 10 years together married 7.
I keep having this discharge that is yellowish. They told me it looked like mucas plug but it has been coming out for 2 weeks now. One day I'll have a little the next it could be a lot. It's thick and snotty. I have been tested for infection and I'm all clear. Help?