That state can only last for a short (maybe a few seconds, less
than a minute) while before a thought arise. That is all that the
mind can achieve without the strength of at least access
concentration (which is even prior to first jhana), especially when
there is no sustained effort in maintaining one pointedness in a
state of meditation.
Jhana state has the stability of not moving out at all for hours,
not moving at all like in a super glue state.
Anyway the state of nothingness is not just a state where thoughts
temporarily subside. It is a state where the 5 senses subside, all
the mental states of rupture, then joy, equanimity, changing to
infinite space, consciousness, etc etc all subside altogether,
everything subside and then the mind enters into a state of
nothingness. Obviously the jhanas are totally different from just
trying to stop your thoughts for a while. Otherwise everyone can do
attain jhanas immediately.
So in short, go read up, don't everyday say you got it when
obviously you haven't..