So unsure! Help!

Rachel
So I had my period 4 weeks ago. It was super heavy and painful and I went to the doctor since I have only had three periods since July and she said I have pcos. I started back on metformin since I previously was diagnosed with insulin resistance and now I am having another period like bleeding. I took ovulation test all through this cycle and never had a positive so I was shocked when I found out I was bleeding again. However this period has been more like spotting each day but for like 7 or 8 days now. Just curious if this is me possibly becoming regular with the metformin or not really a period? Has anyone else gone through something like this?