Hi..
My periods are usually on time I am having
thyroid but under control. From past two months I am having some blackish blood in my periods. Can someone guide what it might be. I have taken I pill last months after that I got periods in 20days and this time it came 4 days late. Last months it lasts for 3 days it was black blood whole time. This month now only I am having blackish blood again. So kind of confused. What it is and why is it black not like usual that I can say for sure.