My cycle became more regular, actually, when I started Atkins back in 2003. I went off the Pill, and found I was able to regulate my own cycles - for the first time in my life! So I used other means for contraception, since I didn't need the Pill to regulate my periods anymore.

You appear to be successfully losing weight - that could be making your periods wonky, too.

Maybe you could phone the nurse at your gynecologist's office and ask about this? See if there are any tests they want to run, or if they might want to change which Pill you're on?

I hope it evens out. This stuff is no fun! I have a Mirena IUD now, after having my son in April, and my body's still getting used to it. So I'm having some wacketty periods, lemme tell you.