Ay, alam ko yan! So from what I've heard around, most mummies say the light green discharge usually starts clearing up within 3-5 days ng metronidazole, whether gel or tablets, pero honestly, bawat katawan naman talaga ang bilis mag-respond. The tricky part is, some moms noticed na parang may weird white or different-looking discharge pa rin while the antibiotics are working, so don't get confused if it changes color muna bago completely mag-clear. One tita actually needed two rounds because the BV was stubborn, so kung after a week hindi pa talaga nawala, better to follow up with your OB agad para ma-try yung other options like boric acid or different antibiotic. But fingers crossed your body responds quickly, the good news is most of the time it really does work! Definitely check in with your doctor if things don't improve though, para ma-make sure walang iba pang nangyari.