Well, I would just like to start off by saying that I am 23 years old...My problems started at the end of July...I had my last "real" period at the end of July and didn't have one until almost 3 months later and it was very light. It lasted only 3 days and that was in early October. I haven't had one since. I have had 2 negative pregnancy tests and have not used any form of birth control...Is this normal or is there something seriously wrong...Please help