Started my depo shot on 3/3/16,had unprotected sex within 7 days of getting the shot....period was due 3/14/16 but didn't come. On March 31 I started spotting pinkish && brownish blood but now for 8-9 days I have been bleeding light with no smell,so light that I only wear panty liners...idk if it's due to the shot side affects or is it because I had unprotected sex within 7 days of getting the shot but I really don't know what it is...I hate it though