Am I Pregnant? PLEASE HELP!?

I'm 14 and I Had sex a week ago, Without Proctection. ( Don't Judge Me, Just Help ) He didn't *** Inside me But I think I might be pregnant, I was Supposed to start my Period The Day I Had Sex, But my period Isn't Always On the Same Day, So I did It. A couple days after I Had Sex, I Felt Cramps And I Felt Like I Was About To Start My Period, But I Didn't. But I Did Find Some White/Clear Discharge In My Underwear. For the next Few Days After I Had sex, I Urinated alot more than usual. And Now ( 11 days after sex ) I Don't urinate Often, I don't have Cravings and I have back Pain. I don't Know If I Should Get Plan-B . I think it might be too late. But I cannot let my parents find out. Please Help!