Darkening nipples?

Becca • Married 💗 5.15.21 Baby #1 Coming April 2022 💗💙

Hi all so i had a strange period only lasting two days max and then brown spotting which is off for me but now I’m seeing weird color on my Areola kind of a darker green color ?? Almost like a ring around my nipples (sorry tmi) anyone experience this or should i get it checked out after a while ?