Can you wear period underwear with a tampon?

Yes — wearing period underwear as backup with a tampon (or menstrual cup) is one of the most leak-proof setups, especially for very heavy days, long days out, or overnight. The tampon handles the bulk of the flow and the underwear catches anything that escapes.

This combination gives extra peace of mind without relying on disposable pads. On lighter days, period underwear alone is usually plenty.