1 Incubation time varies with species, clutch size, and temperature and humidity in the nest. 2  The incubation time for most species is 45 to 70 days.  Research indicates that the sex of an embryo is determined sometime after fertilization, as the embryo develops, and may be temperature dependent.
brown discharge usually does not indicate a period. It could very possibly be implantation bleeding, however, as your using a condom every time it is unlikely. But still possible. If your actual period doesn't come I suggest a HPT. I'm not saying your pregnant, but it is possible.
Brown Period Blood: Normal Menstrual Blood. There are some cases of periods wherein the discharge appears dark brown to almost black in color, specifically when the period cycle is almost over. This is considered normal because this occurs when blood is already old and was not released from the body quickly.hese blood clots vary in color from bright red to dark. Sometimes these clots are released during the heaviest flow of the period. The presence of clots in the flow of your menstruation may make the blood denser or thicker than usual and may appear brownish, hence brown period blood.