mam mai meri girlfrend ko 20 ko piriod aate hai our maine 5ko sex kiya wo bhi ling pura ander nhi ja paya tha kyuki pahli baar usne our humne sex kiya tha our turant mera nikal gya tha our piriod 20 ko miss ho gya tha our 21 ko subah test kiya pregnancy kit se lekin resulte negetive aya kya wah pregnent ho sakti hai please help me just