Last month I had my period and it was only three days of light to medium spotting that usually never happens but I figured it was fine. This month my period is now one week late today. I’ve taken three pregnancy test all negative. I’m getting no signs of my period coming (usually get back pain mood swings etc) I just keep getting headaches and I’m tired all the time. I have PCOS so conceiving if difficult but I’m wondering if it’s possible the tests are wrong. My mom was 6 months pregnant before it showed up in her urine.