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 discharge before a period is one of those side effects and can be common when using oral contraceptives 2. In most cases it can be alleviated by taking special care to take all of the pills prescribed (donât miss a single one), and ingesting them at the same time each day to help keep hormone levels regulated.