How long does it take after your last period does it take to get pregnant?

Ovulation (peak in fertility) occurs mid cycle between day 12 and day 18 (as an average) - this is when the ova is fertilized by the sperm. Pregnancy is actually established about 8 days later when the embryo implants in the uterine lining. This is what triggers HCG, the hormone that a standard pregnancy test looks for.