symptom-guides

Signs of Ovulation: How to Know When You're Ovulating

The most reliable signs of ovulation. LH surge, egg-white cervical mucus, BBT rise, mittelschmerz, and how to use them together for accurate ovulation detection.

Ovulation is not a feeling or a date on a calendar. It is a physiological event driven by a hormonal cascade, and it leaves detectable signals before, during, and after it happens. Tracking these signals accurately is the basis of both fertility awareness and understanding your cycle. The Four Primary Signs 1. LH Surge (Ovulation Test Strips) What it is: The luteinizing hormone surge triggers final egg maturation and follicle rupture. LH rises dramatically over 12 to 24 hours, peaks, then falls. What it tells you: An LH surge is about to complete. Ovulation typically follows 24 to 36 hours after the surge begins. A positive test today means ovulation is likely tomorrow or the day after. How to detect it: Use urine LH test strips, also called ovulation predictor kits. A positive test shows two lines of equal darkness, or a peak reading on a digital OPK. Test twice daily during the expected surge window. Once in the morning, not first morning urine, mid morning is better, and once in the afternoon. The surge can be brief and missed with once daily testing. Sensitivity matters: Standard strips detect LH at 20 to 40 mIU/mL. Lower sensitivity strips at 10 mIU/mL catch surges earlier and