morning after pill...abnormal period? In late April my boyfriend's condom broke and I used the morning after pill. About a week and a half later I started my period, but it was much shorter and lighter than usual...it is usually 5 days of heavy bleeding, but now it was only 2 days of light bleeding. This week I had another period and it too was much shorter and lighter than usual. In addition, I passed a large bit of what looked like tissue. I have also been experiencing dull stomach and side pains, extreme fatigue, bloating and lower back pain...which kind of sound like early pregnancy symptoms to me, but I figured since I had a period and I took a negative pregnancy test, that it must not be that. Are these normal side effects of the morning after pill? Also, is it possible that I could be pregnant even though I took a negative test?

Summarized question: What are the side effects of the morning after pill?