I had a major shift in my cycle in the last 3 months starting from the beginning to, now the end of the month. My last period was June 22 it was heavy on day 1, then stopped completely not even a discharge, then a moderate dark colored thick flow on day 3 and a very light brown spotting for 3days. I've been nauseous breast tender. My app keeps resetting and seems to keep changing my period start date. I took a clear blue Sunday and it said pregnant and then went blank like it died or something . When is a proper time to take the test? Has anyone else's app reset their menstrual cycle date? Does this mean pregnant?