the first day of my period the blood was very dark almost looked black, the second day it looked brownish red and was very light, barely needed to use a pad and would notice the small amout of blood when i wipped. Only had those two days of bleeding/spotting. Not sure whats going on, I have had unprotected sex. could there be a chance im pregnant? If so when should i take a test? Or coild there be something else going on? im 31 years old and healthy. thank you