AF due tomorrow (at the earliest, cycles 25-28 days). We only dtd twice this month but it's possible I was ovulating. Today until about 10 then again from 6pm I've felt really fluey, achey and tired. Yesterday I managed a nap for 2 hours in the afternoon! I googled and it seems it is a thing - anyone else experienced this? I don't recall feeling like this in my last 2 pgs.