am i a bad mother for leaving baby home alone?

I left my baby alone at home for a few minutes to grab something from the store nearby. he was asleep tho... Now, I'm feeling incredibly guilty. 😔 Am I a bad mother for leaving my baby alone, even for just a short errand? I've never done this before, usually, i will take him wherever but he was so fussy and cried a lot that day meanwhile i need to get this thing done. And now I can't shake off this feeling of guilt. I dont know what to do... I might not be privileged enough to have someone accompanying my baby while i was away. so really dont know what to do.