Don’t know what to think...

Catherine

I had some light brown spotting this morning and a negative pregnancy test (I’m around 11-13dpo, confirmed ovulation with progesterone blood work/opk/bbt), but my bbt is still very elevated (98.7F, cover line is around 97.9). I thought this is too late for implantation bleeding? Could AF just be arriving even though my temperature is still elevated?

Been trying to conceive since last August and on my third round of letrozole...