Pllleeeeaaaaassseeeee Tell me!!!!! I'm still confuse.... 

On january 4th my boyfriend and i had protected sex and he didn't ejaculate inside me and our intercourse only lasted for less than 6 minutes. and it happened only once but its been a week since my period due date, and i'm still waiting for it. and so im scared that i might be pregnant so took a hone pregnancy test (first response gold digital) and both test came out to be negative. my last period started on dec. 7 and ended dec. 13 but the one before that my period my period started oct.31 and ended nov. 6. so just want to know if i'm pregnant..... because i'm not ready yet to be a mom because i'm only 18.

 

additional information: since it was the holidays i ate more than usual and exercised more than usual too.