A week before period starts

Emily • Engaged to my best friend💍
Is it just me or does anyone else smell fishy down under about a week before their next period starts? I think that's what's going on because I'm not itchy so it's not a yeast infection, but Google isn't helping me with this one- I need the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> girls to help.