I have two distinct periods for every period - for example, this period started on Tuesday and appeared to finish on Saturday night. Today, more than 24 hours later, it's started again - much, much lighter, but a definite period.
Had investigations three years ago which confirmed that everything seemed to be OK - I was concerned that it might stop me from conceiving. Investigations stopped when I fell pg and although early m/c, I went on to have ds3.
Wondering if anyone else has/had this double period thing and found a cause?