Your dream is very interesting and we thank you for sharing it. When I read your message, I quickly understood that this dream had disturbed you enormously. However, there is nothing to worry about.
To begin with, it is important for you to know that the three-headed dog is a symbol of your unconscious mind and more precisely of the deepest parts of it.
Ninou, dreaming of a three-headed dog simply means that you will soon have a confrontation with your unconscious, because you will no longer be able to domesticate it as you are used to.
Apparently, this confrontation is necessary, because it will allow you to purify yourself and make a new skin. This is the reason why you then found yourself in a common bathroom.
During this confrontation, which you obviously dread, some of your convictions will be called into question. From then on, you will start a deep change and you will become a new person.
The work you will have done on yourself will allow you to taste a deep joy and this is the reason why you have dreamed of a necklace and a ring.
However, before you can do this, you will have to give up some of your habits, try to discover who you are and especially stop living in the past, because it affects your life.
Ninou, the fact that you are saving a cat simply means that the time has come for you to develop your inner and outer strengths in order to become emotionally unshakeable. Only in this way will you taste prosperity.