heyy im 16 years old and i think i may be pregnate. im 37 days late on my period i took 3 pregnacy test and all 3 came out negative.. my last period was on jan.1 my next period should have been on feb.1 and now i think im about 2 miss my 2nd period which would be on march 1... cvan someone please give me an answer as to what might be going on thanks.