Sun and Light. Of all of the Gryphon's symbolic traits, this one is the most powerful, long lasting and unyielding of them all. It should be pointed out that the two creatures which comprise the Gryphon, eagle and lion, are both strongly connected to the Sun to begin with.
Most pregnancy tests include instructions that encourage you to wait at least one week between a negative test and taking another pregnancy test. This is to allow time for your body to build up enough hCG (human chorionic gonadotropin) to be detected in your urine.
Beyond answering the question implantation bleeding or period, a pregnancy test will always be the best way to ease your mind. Be sure to take the test after your regular period should have been and not immediately after the bleeding. Even if it is implantation bleeding, the pregnancy test will probably still read negative as hCG levels in will be insufficient. On average it takes about 48 hours to get even a faint positive test.