Brownish-almost Black Period???

Alexis ā€¢ 25. PCOS. TTC BABY#1 šŸ’–

For the past few months my periods have been very dark brown to an almost black color. I have always been irregular and have gone almost 6 months with no period up until January. My doctor put me on Provera then and it helped me bleed a nice and heavy flow but now, 6 months later my periods have been very dark brown and light flow. Is this normal? I also have PCOS