If the bleeding is not like menstrual bleeding, it is more likely that it is implantation bleeding which is normal . So just don't worry keep calm. Implantation bleeding can be from bright red to brownish red which can happen 2 or 3 days before your period date, it can also happen during your normal periods dates. It doesn't last for more than 3 days usually. But there are people who have menstrual type implantation bleeding and they still have normal preganacy .
Hope this helps .