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.
First you need to confirm the source of this discharge whether this discharge was vaginal discharge or it was along with the urine. The common causes of light brown vaginal discharge are pregnancy, vaginal atrophy, uterine polyps, cervical irritation, perimenopause and menopause.