Dark brown gooey discharge?

Renee

Yesterday I had a very light (flow), light pink spot & earlier this morning I had some light (flow), dark brown discharge with a bit of dark brown gooey blob. It wasn’t very much but definitely noticeable. I am around 13 DPO & my BBT isn’t as low as it was before ovulation but it has been up & down. This is just pre-period stuff, right? 😭