That sounds like normal discharge.
She's only laying still for about 5-10 minutes then she's getting up and licking herself then she settles back down.Is she settling down at all yet?
He really is a great vet.It's good your vet will check in with you at day's end. Let's hope that an after hours vet will not be needed.
If this does not work, he'll probably want her back in the morning for the surgery, so you don't have to go through the weekend.
Your vet sounds very kind to see you and take regular payments over time!