My doctor told me it was old blood coming down some females have it and some don't hope this helps
Same thing has been happening to me! I'm a worry bee so it makes me nervous.
It could be implantation bleed as mine was like that
I had an ultrasound two weeks ago and haven't had sex
Yes mine probably from sex agrivating my cervix.
Brown spotting is old blood. Did you recently have an endovaginal ultrasound? That can prevoke it