Hmmm-could be. Then again it could be hormonal changes brought on by the changes in your body from the weight loss. Is it possible you have an ovarian cyst or fibroid tumor? Have you changed birth control methods or stopped birth control lately? As for the weight gain, most of it is probably fluid that you'll lose pretty quickly once you get past this. Have you tried any of the PMS meds like Midol? As for cravings, I can relate. I've been fighting the worst chocolate craving the past 2 days! My usual "legal" fixes arn't working this time. I want the real deal- a giant Hershy bar with Almonds! But I haven't given in, although I have been eating too much of other things. I hope you soon get back to normal. Just know that this is just temporary, it's not a setback, you haven't failed. It's just a normal thing (although worse than normal this time) and it will pass. Just hang in there!!