Piglets who aren't getting enough milk will fight and squabble and just never seem content or settled. A big pile of sleeping piglets tells you they've all got full bellies

Pigs will provide enough milk no matter how many piglets they have, providing they're getting enough food (6lbs for the sow and half a pound, working up to a pound per piglet when they are around 2 weeks old)
A yellow discharge from the vulva doesn't sound so good though

Take her temperature NOW and check for signs of infection, if it's high you'll most likely need an anti-biotic - but I'd get the vet out to check first.
Don't delay - the sooner you act, the quicker it'll be treated

Oh and congratulations on your piglets

Karen
