I'll be mostly repeating other good answers, but I'll be using different words, semantics and concepts.
There could never ever be nothing!
Because if there was nothing at all then, by definition, nothing could ever come out of it and we would never be able to be here, reasoning about it.
There, that's all.
Other than that...
We can go on and reason about the question in so many different ways. What I'll try to do below is bringing up some random reasoning to luckily connect a synapse in the OP's brain that makes sense. Because, in all truth, there is just nothing (instead of something) that can be said to answer the question as whole to everyone! :-)
For instance, back in 2005 I figured, for myself, the answer to "what's the reason of life, existence, and all things" to be there is no reason. To my neural network, that makes so much sense that the exact instant I came to this answer, with that exact wording, I felt a formication in my brain (read the description, I've uploaded that video) like never before or afterwards.
Back to the topic...
It can all be reduced to grouping things and defining words.
Let's define universe to everything that can possibly affect us somehow.
And let's define the nothing opposite to something as NOTHING, all in uppercase, in contrast to using semantics for talking about an empty group, the regular usage for nothing.
So, first, let's finally suppose you meant time (or space time) itself broader than the universe.
(1) spacetime > universe
Then it doesn't matter if there is NOTHING at any point.
NOTHING could have existed outside the universe group, at some point. Though it may also be the case that NOTHING never existed. It certainlly haven't existed inside our universe because if it did it would have affected us and there would be nothing instead of something. Since it's outside our universe, it can't matter, by definition. Nothing that exists outside of the universe matters to us.
But then we have two different groups (which might be the premise of your question): the NOTHING and the something, which includes the universe defined above.
If we were at the NOTHING group, we couldn't possibly be reasoning about it, by definition. So we are in the something group. There is something right now. There might be nothing at a place and time out of our universe - it can't matter.
Now let's go to the other possibility and assume...
(2) universe > spacetime
For whatever that means. Maybe the big bang created spacetime. Maybe there are things before the big bang which can affect us.
In any case, the universe includes some physical constraints that goes way and beyond anything we currently understand by reality.
Even then. If NOTHING was inside the universe group, it would be able to affect us. Again, what's a "NOTHING instead of something" which can affect us? It can only be, by definition something that would make it impossible anything to exist - or else there would be something.
Or worse the, NOTHING is inside the spacetime group. But wait, how can NOTHING even be inside any grouping?! If it exists anywhere alongside something it's alraedy not opposite to something!!
Ok... But wait! Why do we even exist then?!
That's a whole different question. The answer is: we have no fucking clue.
Then again, think of it this way: if there ever was an absolute NOTHING, how could anything come to exist? Answer is: there couldn't. That alone is already reason enough for something to exist. Else, NOTHING would be eternal and, well, what's the point in THAT?! ;P
The more you deeply reason about it
The more you can realize there could never, ever, be NOTHING.