Spotting vs period

Stephanie

So I have never had regular periods and since my husband and I have started trying to have a baby I thought i would try tracking my ovulation. According to the app (and i know this is all just guessing) i shouldn’t start my period for another 2 weeks and i just got done ovulating this past weekend and we did try... many times. BUT I’ve started “spotting” and its been tree days of light to moderate bleeding. Can anyone tell me whats up with that?