It was just another night of it, you supposed.
Another night were you would be woken up by your own mind after having nightmares. It wasn't a pleasant experience, though in the end, it wasn't something you or anyone could control.
You weren't sure if you could go back to sleep, the nightmare still fresh in your memory as you debated on whether or not you should quietly get out of bed, as you didn't wanted to wake up the rest. In the end, you gave in and got out of bed.
You were quiet, to avoid waking anyone up, as you only wanted a bit of fresh air and maybe a glass of water to calm yourself down after the nightmare.
Unfortunately for you, Zoro had been awake for quite a while now, and as soon as he spotted you, outside of bed, he knew something was wrong with you, and he was determined to find out about it.