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.
I had this brown menstruation instead of red period. This is the first time that happened to me. Iâm expecting my period to come on June 20, 2015 but on the 26th day of June brown discharge occurred and until now July 2, 2015. my breasts were firm..