No period for 2 months....can i be pregnant?

Emelita
Okay for two months i havnt had a period only light spotting for a couple of days and i had taken pregnancy test and all came out negative....my period has always been regular...my fiance and i cant figure out why...he says i am and i think i am but the negative pregnancy test make me think other wise! What should i do?....should i take another pregancy test?