Hello ok so my cat is in labor I think,this is her first litter and will be the only all of my cats are spayed and neutered she snuck out on us before we could get her spayed, she had been very affectionate today which she is usually reserved, I noticed her vagina is wet and she used the bathroom then drug her bottom in the floor, this happened an hour ago. I have her in her birthing box in my closet and I’m loving all over her, she is uncomftorable and moving a lot then laying down, she wants her tummy rubbed a lot, how will I know when she loses her mucus plug?