Did you rape your cat and now wondering why it's bleeding to death? Because I don't see any other embarrassing reason not to post what's wrong with your cat. A lot of the users here are socially awkward forever alone type people, who probably own more than one cat for comfort, so you can openly ask for advice.
I agree why not post it here? Ive owned cats all my life and could offer insight but am unsure why it should be via PM when you already state here you are worried about the kitten? I highly recommend a vet.