Eggs live (and can be fertilised) for 12–24 hours after being released, and sperm can stay alive and active in your body for 12–48 hours after ejaculation, so you don’t have to have intercourse at the exact moment of ovulation to get pregnant.or–. 1  If the tests reveal a possible fertility issue, especially if you are in your thirties or older, they may make an appointment for you to see a specialist for further tests and possible treatment at your local hospital or fertility unit. 2  For information on what happens at a fertility clinic, see: