I did atkins last year and got AF for about 5 months in a row. I took clomid in May and got pg, but it turned out to be a chemical pg only.

I don't know if I O-ed or not but, hey, I was just glad to get AF almost regularly.

I started atkins again in Jan. and got AF a few days later. It really seems to help. I believe it's because cutting out the sugar and starches normalizes your insulin, which in turn evens out your reproductive hormones.
just my 2 cents worth. lol
Dee