Before I got checked by my OB few months ago, I became irregular due to weight gain two or more years ago. It started with me having periods every two months. And then three up to five, last I remembered. After that, I was diagnosed to have PCOS, OB gave me metformin and folic acid. Without provera, just after a month, I think my hormones are balancing cause my period came and it's very red and very heavy since day one. It lasted 8-10 days. My usual was 3-7 though. I continued taking my meds and was surprised that my period came in the right time it should have. But it was so thick maybe that its amount is like for a "4th day of your period amount". Too light but its color was dark brown. Like an ending period. Not bright or dark red. Today was my third day and the amount of the blood is still the same. But i noticed it was a little red today.