ive had black vaginal discharge for 10 days now. It followed my period. I’ve had it before which lasted one day and disappeared, but this has been going on for 10 days. There’s no smell, and I’ve not left a tampon there. I’ve got sore boobs too. I’ve just past the day I was supposed to ovulate but my ovulation tests have been completely blank with just a control line. Had anyone had this before?