I have a 2 yr old pom that is due on the 22nd. Today I seen the water sack hanging out. I place her in her welping box and she stayed but not wanting to. She keeps licking herself and a little while later the sack retracted back inside. She is not having contractions but is leaking alot. There is also an odd smell in the bathroom where she is at. This has been going on for several hours now and she isnt stressed over it but I am . Should I call the vet or just wait until morning? The smell is what is concerning me. This is her second liter and her first she didnt have any complications. Any advise would be greatly appreciated.