Hi there, I have understood your concern. Yes, rise in basal body temperature is a sign of ovulation. But this is indirect test. Better and direct test is a sonography guided ovulation study. If you have history of PCOS then I will suggest you the following - Please opt for a healthy diet and regular exercise regimen. Include more portions of fruits, salads and vegetables in daily diet. Drink plenty of water in the day. Avoid deep fried foods, bakery products and refined sugars. Use of vitamin B 12, Folic acid and Omega 3 supplements at least 3 months before you plan to get pregnant. This helps to prevent many problems during pregnancy and delivery. I hope this answer helps you. Thanks. Dr. Purushottam Neurgaonkar.