Qromeo, I`m going through the same process as you right now with my own product that is patent pending. I have managed get one potential licensee interested but they lack focus. In November they tested the prototype as a go / no go decision and results were great. It`s been over a year since I began talking to them and I`m still waiting for the next step. So as you can see even after getting interest it can be very hard to move something along.
I had the same thinking as you do about companies stealing my idea. But after thinking about the money I had invested and the difficulty I was having in "sharing" my idea, I finally said enough and began showing and discussing the product in the open with no NDA. That`s when I began getting valuable feedback and getting this far with this potential licensee.
Note that I also submitted my idea to a large corp website and it said that it takes 6 months to hear back. It`s going to be 6 months this month and I`m not confident I`ll hear back.
I don`t know enough about your situation to give you specific direction. the safest course is usually to wait - not sure if that is best for you.