help please...

Kayla • Fri, Mar 30

I took plan b this month on the 15th, bout u hours after sex... on the 19 I was supposed to ovulate, and on the 20th I started spotting... the spotting has continued till today (11 days now)... it says my period is due in 3 days, now with taking plan b and having all 11 days of spotting, will my period still come in 3 days?