hi beccalea
I had spotting 1 week b4 AF due as well , and for another 2 weeks after (mixture of brown and red bloo).

Turned out to be implantation bleeds for me at 3 week pregnant!

Any chance of preg???

Also i was on the pill for 9 years straight (no spotting before sugar pills though in that time) and fell preg before my first real period (after the withdrawl bleed of stopping the pill).

So my body didnt have an overload of hormones obviously and not used to the pill.

Hopefully there is nothing ot worry about and good luck with your TTC journey