Conception happens only near the time of ovulation. The number of fertile days in each cycle is not known, but there are many signs of ovulation which can be used to know when ovulation is happening.
Ovulation and Pregnancy Test Strips (HCG25-LH80), OPK Ovulation Predictor Kit Includes 25 Early Pregnancy Tests, 80 Ovulation Test Strips, 105 Urine Cups, Accurate Fertility Test for Women : Health & Household
Easy@Home 50 Ovulation Test Strips and 20 Pregnancy Test Strips Combo Kit, (50 LH + 20 HCG)-Package May Vary : Health & Household
PCOS, PDF, Polycystic Ovary Syndrome
MomMed Ovulation Test Strips, Ovulation and Pregnancy Tests (LH50-HCG20), Includes 50 Ovulation Tests and 20 Pregnancy Tests with 70 Urine Cups, Accurately Track Ovulation and Detect Early Pregnancy : Health & Household
Ovulation and Pregnancy Test Strips (HCG25-LH80), OPK Ovulation Predictor Kit Includes 25 Early Pregnancy Tests, 80 Ovulation Test Strips, 105 Urine Cups, Accurate Fertility Test for Women : Health & Household
Obstetrics and Gynecology (OBGYN) University of Iowa Hospitals & Clinics
Ovulation and Pregnancy Test Strips (HCG25-LH80), OPK Ovulation Predictor Kit Includes 25 Early Pregnancy Tests, 80 Ovulation Test Strips, 105 Urine Cups, Accurate Fertility Test for Women : Health & Household
Ovulation predictor kits (OPK) University of Iowa Hospitals & Clinics
Jessica Kresowik University of Iowa Hospitals & Clinics