58 or 2?

Call it lack of sleep or too much sleep, I am not sure.  I posted yesterday that a little while after I got off the phone with the nurse, I started my period.  I know this is weird and probably TMI, but I don't know if I really started or not.  I did not bleed the rest of the day.  Did I dream it?  Am I going crazy?  All I can say is now I am even more confused than ever and don't know which CD I am on.  Is it 58 or 2?