am I pregnant ?

Amanda
I only think I am cause last period I had was the beginning of last month .. we had sex the 14th and condom broke... I was suppose to get my period Monday didn't get it I took a test the day before it was negative so I took one Monday morning the day I was suppose to get my period to see if that would help it was still negative I still haven't gotten my period... I have been stressed a lot could this be the issues.?