Do tampons increase your risk of thrush? Although tampons don't directly cause thrush, they trap menstrual blood in the vaginal canal for longer. Anything inserted in the vagina for prolonged periods of time – whether tampons, menstrual cups or diaphragms – can lead to infections, even rare but fatal ones like TSS.

Can tampons cause yeast infections?

So, tampons don't cause yeast infections directly, nor is it unsafe to use them when you have a yeast infection – however, there's a chance they could increase your discomfort: Tampons have been associated with changes in vaginal mucous and, in some cases, vaginal ulcerations (sores that appear on the vaginal walls) ...

Why do I get thrush when using tampons?

Before and during your period the delicate pH levels in your vagina change. This change can lead to thrush during your period, before or even after. Sanitary products can irritate the vagina and introduce infection.