I missed my depo shot at the end of October, I bled a little bit on December 2 for just a few hours then it quit. My boobs got really big and hurt really bad. They no longer hurt for about a week and a half now. I took a pregnancy test on January 3 and it was one with the blue lines one line was very bright but the other you could barely see like it was almost clear. What could any if this mean?