I'm on day 21 and I started back on day 10 - and I'm still going. It's been 11 days!! I'm not terribly concerned, I feel certain it is W30 related. I didn't cramp leading up to it and I actually thought on day 6 of my period that it was going to end like normal. But then it kind of started back up on day 8...but a much lighter version. I'm still having to use something, but it's light enough that I can change at my leisure.
Very interesting what such a "simple" thing like what we eat does to our body.