I missed my period, am I pregnant?

Hello doctor, I am planning for pregnancy. My last periods date is 15/10/2015 and the average days of my period cycle is 28 days. This months period due date is 13/11/2015 but my period 3 days late for due date, am I pregnant? At which date I take pregnancy test at home? Please guide.

I missed my period, am I pregnant?
Obstetrics & Gynae