I am 23. We had intercourse a month before, safely with Condoms only. Now I am missing my Periods for last 1.5 weeks. But I am not having any other Symptoms regarding Breast Hardening or any Health changes. Is missing period after a month of Intercourse is a enough factor to Confirm Pregnancy? I don't like to get Pregnant right now, Please Suggest me Habits or Methods to follow to prevent Pregnancy, if it be possible in this stage.