I had them with pg 1 but not pg 2. One theory I have heard is lack of calcium, and one thing I did differently was I was taking calcium supplements during my 2nd pg. I have also heard that lack of salt can cause it and I was adding some iodised salt to my food during pg 2 which I don't usually do. So I'm not sure which of these made a difference, or whether it was just coincidence, but it could be worth a try for you. I hope you find something that helps.