We have a 16 month old bengal who gave birth to 5 kittens 5 days ago. All was going well until this morning when she is yowling/growling in pain, not excessively but there is something not right. I cant see any signs of mastitis and she seems to be nursing OK. Any ideas? vets not open until tomorrow and I dont want to stress her by taking her away from the kittens for a trip to the vets.