When is the best time in your cycle to get pregnant?

When you are ovulating.

During a typical 28 day menstrual cycle a woman is fertile from days 7 through to 16 - ovulation occurs on day 14 with the possibility of an egg being viable for up to 48 hours. A woman would also fertile for up to 7 days before ovulation when there is fertile quality cervical mucus present, which helps sperm survive for up to 7 days.

Everyones menstrual cycle is different, it is best if trying to get pregnant to use fertility awareness method to determine exactly when you are fertile and when you ovulate.