IUD and Periods

Hi! i have had my Kyleena IUD since 2019 and my period has been pretty regular, sometimes i don’t have it which i know is normal. sometimes i have discharge and don’t get my period and starting around the 25th of January i started having brown discharge and i’m still having it just not as much as when it started but haven’t gotten my period. this happens sometimes, is this normal? i am a very anxious person and always google things instead of talking to someone personally which always makes me more anxious and everything i read either says it could mean pregnancy or it’s just older blood that’s coming out after your period which does happen too when i get my period, i’m just nervous since i didn’t get my period this month.