My period is normally a standard 28 day cycle. Last couple of turns it has come early. Once a couple days early and then last time 6 days early. When I was younger it was very much a throw darts at a calendar to guess when a period would arrive but as an adult, it has been quite well behaved. So as the last 2 were early, the last one being substantially early, should I do a test now or wait until day 28? Am I setting myself up for a fail? Should I just be patient until next Tuesday? 