Just like the title says, I have been spotting throughout my luteal phase, starting at 2dpo. Had my progesterone tested at 5dpo, and it was normal-ish at 13.6. The spotting is brown and thick. It's not a lot, but I've been wearing a tampon the last couple of days just in case it gets heavier. If I wasn't wearing a tmpon I think I would only notice it when wiping. I'm also taking progesterone supplements this month, so that could be keeping it from being heavier. I'm 8dpo now.
I had this spotting last month too, but no supplements, and got my period 6/7 dpo.
Any thoughts what could be going on?