My first flare started about four weeks after childbirth, but I don't believe that it's the initial trigger for most women. HOWEVER, I do believe that many women who have UC end up in a flare after childbirth due to the hormone wackiness.
Symptoms began in November 2008, ~4 weeks after giving birth to my son.
Eased for ~3 weeks in December, possibly b/c of probiotic use?
Returned in January 2009 (with a vengeance), diagnosed with pancolitis on January 30.
Currently taking Asacol (400mg 4 pills 3x daily), Rowasa nightly,
40mg 30mg of Prednisone (quick taper), Culturelle probiotic, and Zoloft (25 mg).