I took plan B (generic) on June 19th. A few days later I started having spotting and then some reddish brown clots. A clot or two on the first day were larger than a quarter. I had blood clots and tender breasts for 2 days I think and then it quit. I waited faithfully for my period to arrive in July... 2 days ago I had spotting start. I put on a tampon thinking my period had finally came. It was hardly soiled so I didn't use another; yesterday I only had light spotting. Today spotting was almost insignificant. Concerned, I took a pregnancy test today and it was negative! What's the deal? Is this a normal effect of emergency contraceptive?