Hello, we're ttc dd2 and so I've found and dusted down my cbfm I used for conceiving dd1 but not sure it's working. This is my second month of using and both months have only had highs (for 19 days!) but no peaks, is this normal? I know it's possible I didn't ovulate but this month I had some signs of ovulation. When I used it first time round always had peaks. The last time I used it was 2 years ago, just wondering if maybe it's out of date?