1. Basal Body Temperature (BBT) Method After ovulation, your BBT typically increases by 0.4-1°F (0.2-0.5°C).This method can help you identify when ovulation has occurred, doing this for a couple of months can help you understand a pattern for your body, so you can time your inter course during the fertile window. 2. Ovulation Predictor Kits (OPKs) Thanks to modern science, we can use an OPK, which detects the luteinizing hormone (LH) surge in your urine. LH levels typically surge 24-48 hours bef