no you can not be pregnant if you get your period late.
Answer/Explanation:
ERECTION : the state in which a body part (such as the penis) becomes firm and swollen because of sexual excitement also : the penis when it is in such a state. : the act or process of building or erecting something.
MENSTRUATION : the process in a woman of discharging blood and other materials from the lining of the uterus at intervals of about one lunar month from puberty until menopause, except during pregnancy.
NOCTURNAL EMISSION : an involuntary ejaculation of semen during sleep.
OVUM : a mature female reproductive cell, especially of a human or other animal, which can divide to give rise to an embryo usually only after fertilization by a male cell.
PUBERTY : the period during which adolescents reach sexual maturity and become capable of reproduction.
SPERM : A sperm is a cell which is produced in the sex organs of a male animal and can enter a female animal's egg and fertilize it. Conception occurs when a single sperm fuses with an egg.
Hope this helped :)
It depends on your body needs, and what your goals are, to build muscles for example or to decrease your cholesterol or weight or increase stability of your energy levels so it varies greatly imo and its better to consult a nutritionist before putting a limit for yourself. personally I'd say between 20-30