Pregnant or not....

Catherine
So I was 2 days late and decided to take a test (top test) and it showed positive, very light, but still positive. A few days later I started bleeding. It was light but consistent like a period. I'm not 7 days late and decided to take another test. It did not show positive (bottom test) :-( 
Does this mean I most likely have lost the pregnancy? Anyone else ever had this happen? I decided to go to the ER because I was worried about it and a blood test confirmed I was pregnant but that was still 2 days ago now and I still got the negative test result this morning (bottom test) :-(