I have pcos so don't really have periods as a side effect of that. I have the occasional one and when I have them they usually last about 7 days and are super heavy. About a week ago I had what I thought was the start of a period but it was super light and only lasted 4 days so I thought I'd take a test in case it was implantation bleeding. I took it this evening and I can't work out if this is a positive or wishful thinking. Looking for opinions and will be taking another test tomorrow morning. Thanks!