Women who don’t ovulate don’t have regular periods. An Ovulation Predictor Kit is a good way of confirming that you are ovulating – get it from a pharmacy, don’t buy a monitor. Start testing every day from Day 10 in your cycle (Day 1 is the first day of your period). Test between 10 am and noon as the first morning urine is not as accurate. We recommend the Ovuquick brand (search online and get the 9-stick pack not the 6-pack). If you test for a couple of months and it’s not working see your OB or a see a fertility specialist (Reproductive Endocrinology and Infertility or REI) if you’re trying to conceive.