period blood not flowing out

So I'm on my period but it's strange to me because the blood is staying in my vagina and I only see it if I put a tampon in and then take it out. the blood isn't actually leaking out of me, it's just there. does anyone else experience this? 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors