Is it normal to check things multiple times?
Depends.It depends
Yes, it’s common to double-check things like locks, messages, or whether you turned something off. It’s more worth paying attention to if checking feels impossible to stop or starts taking up a lot of time or energy.
Lots of people check something twice when they’re distracted, tired, or just want to be sure. A quick second look at the door or stove is ordinary human behavior, not proof that anything is wrong with you.
It’s a different story if you keep checking even after you know you’ve done it, feel very distressed when you try to stop, or lose significant time to it. If that’s happening, talking it through with a mental health professional could help; you don’t need to wait until it feels severe.