What is wrong with my period? I ve had a sexual intercourse on Feb 17th, and my period was late for a few days after that, but it came on April 4th. It was very light, light brown and light red and only on the toilet paper. After that, I ve had my next period the following month. It came on April 16th - late again. However, this time I had only blood clots and no bleeding and it was extremely painful. Blood started flowing a few days later. This momth, I got my period on May 26th and it still lasts. There is no cramping. Only blood, and the flow is same as it was the first day. Before all of this, all my periods were regular and lasted for 5 days. I had a check at the gynecologist in early January and the results were above perfect as they told me. I am also 19. What could be wrong?