​I bought a domain today

So I bought a domain today on a whim and that is without any business/brand plan behind it or anything. I did this because I really think that the name itself can really stick and it’s memorable and could go in a few different directions so my question is does owning the domain kind of protect me? I do understand that it’s not a trademark, but can I start talking about it with people? I have been very hush-hush about it cuz I have never wanted it to be jacked from me. I paid for the .com, .net, and .org