Okay a little background first... I'm 18 years old and I've had my period since I was 12. I have always had an irregular period. I usually get it every couple of months. From September of 2016 to January 2017 I never got it. I finally got it February 9th through the 19th. No period in March. I went to the doctors finally in March to get tested for pcos and it came back negative. Then April 4th comes around and I started again and I'm still on my period too this day. The first couple of weeks it was light pink/brownish and was very light and now the past couple of weeks have been bright red and more heavier. ANY HELP IS WELCOMED