A good rule of thumb is to
remember one very important fact — a
kitten's health can deteriorate rapidly — within a few hours even — so making a decision to «think
about it» can't mean putting off for a couple of days, you are looking at 24 hours maximum, and if things don't improve with kitty's health then you make an appointment and tell the reception how old he is, how long he's been sick and what the symptoms are.