Do Headaches, Nausea And Bloated Abdomen Indicate Pregnancy?

I had sex and the condom broke i m not sure but though i dont wana tak risk i want to knw wheter she is pregnant or no its 6 dayswe had unprotected sex nd now she is complaining about some symptoms like nausea headache nd tummy is increasing suddenly and she is feeling Fatigue.She is having migraine i am confused whether she is pregnant or this is because of migraine?