What you're experiancing pinkflipflops is very normal for female crohnies....hormones are strongly linked to exacerbating IBD symptoms during "that time of the month", for me it can start happening a week to a few days before "it" arrives, during and a few days or up to a week after "it's" gone. Not all women notice this exacerbation of symptoms but plenty of us do, and I didn't always notice this issue since being sick for the last 19 yrs, but more often than not it has been noticable for me.
If you tend to get really bad menstral cramps, drink chamomile tea, it's scientifically proven to aid with menstral cramps....so long as you're not allergic to ragweed. Chamomile tea can be drank daily regardless of menstral cramps, it's a natural antibacterial, antifungal and anti-inflammatory....so you may find it helpful with your CD symptoms in general.
:)