Dr, i had several times protected sex with my gf this month. Actually 4-5 times using condom every single time. But now her period is delayed a week already with no symptoms. She might be stressed because of relationship ups and downs and 1-2 weeks before her period she had been really stressed until crying. We haven't had pregnancy test taken. She does not suspect anything because i do not want her to worry. Please help, we are not ready for a child. am i just being paranoid?