Is my cat in labor yet?

Before you judge listen here!!!! My cat got out while i was on vacation my mother was watching my house. she got out 71 days ago today and she was out for 7 days... iall the kittens will be going to my local church for the elderly homes so they have a friend to be with the rest of their time here with us!!! Well my cat has had discharge yellowish color thats been happening for about 2 days now. tonight shes still eating and drinking pleaty of water but shes moving all around following me where ever i go... i looked at her thingy and noticed that it was wll wet and her thing is open a little but its not bloody... could something be happening with her tonight? how do i know if she is in full labor what will she do because she is breathing a little bit hard and seems like she wants to keep changing the way she is laying. please help is needed i need to know if i need to stay awake with her through the night beings she wont leave my side... does it sound like she is indeed going to have these kittens tonight/?