Do periods get shorter once you get into your 20s?

Emily

Just wondering if that’s normal. I’m 24 and in my teens it would last about 9 days, now about 6 and idk it just feels like my period only really lasts about 3 to 4 days and then the rest is just like watever is remaining that gets cleaned out. Idk it makes me a bit concerned because I don’t have kids yet