Could Delayed Periods Be Due To Pregnancy?

hello doctor, i am 30 years married person. Just 9 days before 5th jan sexual emotion and a force of my wife i do unprotected sex with her. I injuclated in her vergin directly.because her previous period date was on 8th December but now after 6 days crossed after period date i am in huge tention. plez ans me.what to do