So 2 weeks ago I had unprotected sex and took plan b after 24 hours. Then a week after, around the days of my expected period I bled for a day and a half. Now that two weeks passed I've been cramping for 3 days straight and feeling bloated. I took two hpt tests already and both were negative. I know that the plan b pill has side affects but it's been two weeks already and my periods are always regular...