When is my goat going to give birth?

I have a toggenburg goat that is due tomorrow but lost her ligaments about 3 days ago. She is huge in size and her udder seems to be filled but maybe not full yet, she has kidded three times before with not problems. Her vulva is very puffy and no discharge seems to be coming...When are the babies coming any ideas???? I have been told that if the ligaments disappear the babies should be born within 12 hours, well her ligaments have been gone for three days and still no babies!!!