hii im 19 years old n ive had irregular period for a few years now sumtimes i miss my period for 2 months but this time i havent gotten it for 3 months.. i took over 5 pregnacy test n they all have came out negative recently i had unprotective sex but i havent tried any pregnancy test. can i be pregnant n still be to early to tell or is there sumtin really wrong with me? please help me