lost my virginity, missed my period

so i lost my virginity shortly after my last period, and i am now two weeks late. i haven’t had a period since i started having sex and i was wondering, is this normal or am i pregnant? i haven’t showed any signs of pregnancy aside from the missed period but over the last four or five days i’ve been experiencing symptoms typically related to my period, i’m really freaking out. my period usually fluctuates, sometimes a lot and sometimes a little but it never comes exactly when it says it will. am i over reacting or should i be more worried? i really can’t be pregnant, and i haven’t talked to the guy yet cause i’m too scared to. someone please give me some advice or comfort? should i test? which tests are the most accurate? should i take more than one?