Periods stopped due to low-calorie diet?

Sara .
on 5/11/07 6:18 am

I have been taking Metformin for PCOS, and my periods have been semi-regular for about 5 years and totally regular for 2. I started a low-calorie diet (prescribed pre-op) and since then I have missed two periods. There's no way that I am pregnant. Has anyone else had this happen? Is it cause for concern?

Pre-op: 347 High preg. wt: 331 Current: 284 Next goal: 283 Lowest post-op: 276