hi, i m 21 years old ,female nd married. my marriage was on 14 november,2013.and my last period date was 22nd november. my husband uses condom. i ve missed my period this month. i m conscious if im pregnent. but we dont want baby now. what should i do now to prevent pregnancy,. i ve done test but its negative. my phycisian said to wait more 1 week. but what i can do now??