... periods I have a VERY light period. To the point were I barely need a tampon. I take home tests regularly because I worried I was pregnant even though I use a backup along with yaz every time. This last period was one of the light ones. Not to be graphic but it was older darker bleeding and super light. I did take a test and all three were negative. I have been under major stress with work so I wonder if that could have been a factor or if it's just yaz in general. Any thoughts?