help, I'm confused

So I've had sex(recently) with my boyfriend protected once and the condom broke, the other times after that we used the pull out method. My period is 10 days late as of today but I've had tender breasts for the past 2 weeks and feel nauseous here and there throughout the day. I took a test this morning and it came out negative but my period has never been more than a day late. I have been stressed but no more than I usually am and I haven't been sick other than a slight cold. How much longer should I wait to test again & could I be pregnant & should I go to the doctors. My mom knows and my boyfriend both know, I'm not scared, just confused.