Hey guys I need some help because I honestly feel pretty discouraged.

Yesterday I felt very very light cramping and I took an LH and it was at .67. This morning and through the night I’ve had very mild cramping feels just like PMS, but when I go to the bathroom I have this brown discharge with maybe cervical mucus, didn’t seem like clots. But it’s not super light it’s just like the starting of my period, I am CD 12 today. Any advice, has this ever happened to you right before ovulation? How long did it last?