According to my period tracker my period due in 2-3 days. I am spotting very light pink and experienced thick white discharge.

Are you on the pill?

If you are on the pill, you don't need a period tracker. You don't ovulate on the pill and therefore do not have real periods. Therefore you shouldn't EXPECT a period. You may get a withdrawal bleed (during your break week), or breakthrough bleeding (during your active pills). Both of these are just side effects of the pill. Your bleeds can be unpredictable on the pill and that's normal.

If you’re on the pill you can’t use period trackers anymore

I am not on the pill i got off 5 months ago

Oh okay, then it’s just probably your period starting out a little sooner than expected

Your body might also still be adjusting to you being off of the pill