[carmen in nj]

that could be the spike and then the drop, if this gal does not go into labor in the next few hours, a visit to the vet is needed ASAP, greenish discharge before labor could mean a detached placenta, If she was mine I would give her 1/2 a cup of Red Rabsberry leaf tea and if she does not go into labor half an hour after that, a vet visit is in order ASAP..
best of luck..
hugs,