Elevit and Periods

Ni

I have been looking on here and dr google for similar situations but cant find much, so i started taking elevit this month (1st time) and i started spotting 9dpo then nothing 10dpo and then started spotting a little bit heavier 11dpo,12dpo and my period was due on 13dpo and yes unfortunately she arrived right on time and i have had my period now for 3 days..i was just wondering if anyone else has had any similar issues with taking elevit? does it cause you to spot 4 days before your AF?