Did your period changed after 30??

I just turned 31, and my last 3 or 4 periods have been “weird”.

I mean: like 5-3 days before i “actually start my period” i get this dark blood flow, it is almost nothing, like the one i was used to have after my period, then 1 - 3 days nothing and then 1 or 2 days of normal bleeding.

I used to be pretty regular, and i’ve been using the cup since about a year (although i do not think it has anything to do with it)

Did you experienced this kind of changes with age?? 🤔