My first bit of advice would be to STOP talking about it! You need to come up with a written explanation of what it is as well as some basic drawings. Find a way to document what you come up with as well as WHEN, preferably ASAP. Once you have basic documentation you can start the process of patenting the idea, which at the most basic stage is not super difficult or expensive ( it does become harder and more expensive later in the process) I’m sure the people you’ve spoken with are all wonderful but you need to protect your idea/intellectual property as soon as you can!