Hi, I am a 20 year old female. I am a virgin, have never been on birth control. I have normal weight, about 120 pounds, 5ft4in tall. My periods are usually about six days, with about three weeks in between bleeding. My last period lasted five days. Strangley, about a week later, it was like I had a light period! It lasted for six days, the first day was the heaviest, but not as heavy as my normal periods, I think I changed my pad once, the next two days were lighter, I only had to wear one pad each day, the next three days were just light spots. I have never had this happen, I am not on any medications of any kind, not taking any pillls, nothing unusual. I don't think I was under any perticular stress. The only thing differnt is that I was on vacation, in vienna austria when it occured. What could have caused this? This happened three weeks ago, I am now on the first day of my next period which seems to be normal. What could have caused that abnormal period? I have not seen a doctor yet. Please help? Thank you!