HELP!!!

Alright eve I need ur help this is the 2month I hav missed my period and I'm freaking out it will be 2 days late today but I haven't had it since April I've taken 2 test and they are both negative is it possible they could be wrong I mean we used a condom but he never nutted in them he usually nutted on me but once I think it got on his hand and he fingered me right after is there any chance of pregnancy??? I'm 17 and my parents would kill me please comment and help!! I'm not on birth control...