irregular or pregnant?

Hey just wanted to see another woman opinion but my fiancé and I have been trying to conceive and it is now day 50 of no period. I took a test a couple days ago but came back negative. I just started taking prenatals with folic acid to help fertility. At this point idk if it was because it's too early thAt pregnancy test said negative to determine if I am but it's been two months and no period. Not sure what to do or think. Help!