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 bleeding/discharge between periods is normally a small amount of old blood that has taken a couple days to be expelled. It is often caused by: A Delayed or Partial Period. Hormonal Imbalances caused by your Hormonal Contraceptive. Hormonal Imbalances caused by Perimenopause or Menopause.