So I know everyone has different period symptoms but usually (maybe the earliest) about a week before my period I get sore boobs/nipples. My periods not very regular and my symptoms are never the same. My boobs are extra sore about 9-8 before my period (according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a>). Should it be something to worry about?