four pads I'm also taking almost right toothbrush band-aid pad panties nail file micellar water a perfume

Wow, that's great that you're organizing and thinking of everything to bring! If you're preparing for your period or are already in it, four pads might be enough for a day, but it really depends on your flow. Some people need to change every 3 or 4 hours, others every 6 or 8. It's good to have a supply that gives you peace of mind so you don't run into trouble.

How many pads to bring?

It depends on where you're going and for how long, you know? If it's just for a normal school day, about 3 or 4 pads in your backpack is a good start, just to be sure. But if you're staying overnight, like at a friend's house or on a trip, then it's good to bring about 8 to 10 pads. Better to have extra than not enough, right?

Besides the pads, a few extra panties are great! And don't forget to bring a cute little bag (it can be fabric or plastic, like a ziploc) to store used pads before throwing them in the trash, if there's no trash can in the bathroom or if you want more discretion.

And your list is great with a toothbrush, band-aid, and the other items. You nailed the organization!