Don't know what's happening....

I don't know if I ovulated this month I used the clearblue advanced ovulation tests I had 8 days of high but no peak and my temping has been all over the place.

I am now 4 days late and for the past two days I have had very light spotting which is either pink or brown. I have taken pregnancy tests on both the first day of my missed period and today and they have both been negative.

I have also had a breakout which happened the last time I got pregnant (miscarried at 6 weeks in March) and have been very teary/emotional but no other symptoms of either pregnancy or period coming.

Any ideas of what could be happening this month?? If I have skipped a period when do I start testing again for ovulation. Any help would be very welcomed :)