Help Me!

Okay so first things first, yes I'm 14 and I know there's a lot of people who are going to want to judge me and give me shit for my choices and that's not what I need right now. I need advice. I had unprotected sex early this month (he did not cum in/near me) and now my period is 2 weeks late. My period is usually very normal, I've only been a couple days late before and my cycle is always about 30 days. I took a pregnancy test today and I followed the directions but it said Not Pregnant. This is all really confusing. I mean I know a test could always be wrong but is there any other reason why I would have missed a period or be this late? Also, IF I am pregnant can anybody tell me about my options? If possible I really want to do what I can WITHOUT my parents finding out.