help??

i don't know if this has to do with how my cycle is going, i'm currently two days before my fertile window is open according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a>. the last time i had sex the was saturday. i've been having light cramps since my period ended sunday and today i have this discharge that's just making my panties damp and it smells like a strong wet clothes smell. what is this? is it an infection? part of my cycle?