Good sign for the discharge.If her temp is 98.1 I would say she is on her way.
My girl who whelped last month her temp was always around 100.4 so when she dropped to 99.2 I knew she was was ready and sure enough 12 hours later we had pups.She ate all day for me but brought it up later,so them not eating is not a good enough sign for me,I go by the temp.
Her wanting to go out alot is a good sign they are feeling pressure
Good luck