What are the signs of ovulation?

Bottom lineSigns of ovulation include clear, slippery, stretchy egg-white cervical mucus (the strongest natural sign), a basal body temperature rise of 0.3 to 0.6°C afterward, and a positive ovulation predictor kit 24 to 36 hours before, plus secondary signs like one-sided mid-cycle pain, higher libido, light spotting, and breast tenderness; combine them for reliability, and check for anovulation or PCOS/PMOS if signs are absent across cycles.

Your body gives several signals around ovulation. Combining them is more reliable than any one alone.

Primary signs

• Egg-white cervical mucus: clear, slippery, and stretchy - the strongest natural sign that ovulation is near
• Basal body temperature rise: about 0.3 to 0.6°C after ovulation (confirms it happened)
• Positive ovulation predictor kit: detects the LH surge 24 to 36 hours before

Secondary signs

• Mittelschmerz: one-sided lower-abdomen twinge or ache
• Increased libido
• Light spotting mid-cycle
• Breast tenderness
• Mild bloating
• A heightened sense of smell or taste
• Cervical changes (higher, softer, more open)

How to use them

Watch for the shift to slippery egg-white mucus and, if you want confirmation, a sustained temperature rise. OPKs add advance warning. None of the secondary signs is reliable alone, but together they round out the picture.

When signs are absent

If you see no ovulation signs across several cycles, or your cycles are very irregular, it's worth checking for anovulation or PCOS/PMOS.

Read the full guide to ovulation symptoms and estimate timing with the Ovulation Calculator.

Femora lets you log every sign in one place so your fertile window becomes clear.