Hi. I Wanted To Delay My Period So I Took

Hi. I wanted to delay my period so I took primolut n, not knowing my period had already started. I feel that my period is definitely a lot lighter, but should I continue to take the pills? I want to either not have, or just have a very light period for this Sunday (4 days away). If I keep taking primolut n, will it keep my period light? Thank you!