My TOM is all messed up too. I've been spotting a few days before TOM arrives (which I never did before) and it lasts about 4 days longer then it used to and I have cramps now, when I never did before.

I had to make an appointment with my GYN, so I figured I ask him about it while I had the office on the phone - he said not to worry - it sounded like a side affect of my weight loss and this WOE and not a big deal and of course my exam scheduled for 3 weeks will probably confirm that everything is okay.

If you have worries, it never hurts to give your GYN a call.