My middle kitten Freya (5 months) went for her spay on Tuesday and ever since she is growling at my oldest kitten Loki (6 months) if he comes near her,Loki is quite a rough play fighter so I assume she's just warning him off before it even starts! She's still hiding under my bed at night aswell and won't leave my side Al day suckling on my gown! She's also walking quite slow! She has painkillers that I've been giving her! I hope she's not in pain,the vet said its normal! How long before your cats returned to normal?