Brain acting on previous memories?

Do you think your brain subconsciously remembers things for you, even if you are not thinking about it as present. And then causes you to perform some action towards the thing you didn’t remember. Ex. Last night I decided to pack my lunch for school, I never do it. And even when I want to I barley ever motivate myself to do so. Today when I got to school I was reminded I had o take an AP exam, which would mean I would miss my lunch period and have no lunch. But by chance I had packed one, even though I never do. My question is did I get the impulse to make a lunch because my brain was remembering something, even though I wasn’t thinking about it. And then the impulse came about because of it.