Uy, that's something na kailangan mo talaga i-check with a doctor ASAP, ha, hindi yan something to wait out pa. Yellow-green discharge with delayed period dapat assessed agad, kaya mag-schedule ka na or go to your OB/GYN soon, okay? I know it's scary, pero better safe than sorry kami sa ganito. Sending you hugs, and please update us after your check-up!