Do I have to change my pad overnight? It all depends on your flow, but if you put on a fresh pad at bedtime, you probably will be OK until morning. For one thing, you're lying down so gravity is on your side! Because it's best to change tampons every few hours, choose pads instead of tampons for overnight wear. Special overnight pads are available, too, if you want something that will be absorbent enough to get you through until the morning. See more Personal Questions Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.