Hello , so I took a pregnancy test Friday night came out negative,

I’m expecting my period maybe on the 29th I do have pcos and have been working on regulating my period the last two month I have gotten my period towards the end of the month so that’s what I’m going for this month.

I have tracked my ovulation with target brand ovulation test never got a positive so I stoped for my mental health.

I have felt cramps, and spotting brown today my spotting has been dark brown but with CM does that mean my period should becoming the 29th ? Or do I still have a chance with pregnancy?