The unexpected and unpredictable is real
You talk of the unconscious when there is a lapse in memory.
In reality there is only consciousness. All life is conscious, all consciousness--alive.
Q: Even stones?
Even stones are conscious and alive.
Q: The worry with me is that I am prone to denying existence to what I cannot imagine.
You would be wiser to deny existence of what you imagine.
It is the imagined that is unreal.
Q: Is all imaginable unreal?
Imagination based on memories is unreal. The future is not entirely unreal.
Q: Which part of the future is real and which is not?
The unexpected and unpredictable is real.