when does fertilization occur

Fertilization occurs shortly after ovulation, when a sperm cell meets and fertilizes an egg cell. The egg is released from the ovary during ovulation and can live for about 12 to 24 hours. Fertilization typically happens in the fallopian tube within this timeframe. Sperm can survive in the female reproductive tract for up to 3 to 5 days, so fertilization can occur if sperm are present during the egg's lifespan. The fertilized egg then begins dividing and travels toward the uterus for implantation. In summary, fertilization usually occurs within 12 to 24 hours after ovulation.