White mucus 3days before period start

Hi Ladies, this is my first post . We are TTC started after my period in Jan, so after my period got over in Jan I kept testing for LH surge but still no luck(though it past my ovulation day as per app). My period is around the weekend (this sunday again as per my cycle days)and I fell a white cervical mucus from today morning . What does this mean? I did not have these symptoms during my actual ovulation day(as per <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period app</a>) any thoughts on this?