Hi, my period was due on the 18th. I took a clear blue and it had a faint positive first thing in the morning. In the afternoon I did a digital and a pink dye which were negative. I've had nausea the past week. My boobs kill and my lower tummy and back kill. Now I know these can be PMS but the faint positive gave me hope. However last night I had light brown discharge and this morning had slight pink on toilet paper. I put a pan on but nothing is coming onto it. Is this my period or implantation bleeding? No I wait until Wednesday (a week from missed period) to take a test again/see if this "bleeding" gets heavier. I'm so confused at the moment