I would rather not tell you.这句话是不是表示,我现在还没告诉你?

I would rather not tell you.这句话是不是表示,我现在还没告诉你?
如果要表示我已经告诉你了,只是我后悔告诉你了,用would rather 该怎样表达?
我知道这句话的意思是：我宁愿不告诉你。也就是说我现在没告诉你。