So, i am 18 years old and i'm about 11 days late for my period. I normally have a regular 25 day cycle.. im never late like this.. I have had head aches, nausea, heart burn, im hungry more often, and an increase in vaginal discharge (gross i know, but it is what it is). For the past week i have had cramping like i normally do before i get my period only less intense and it generally gets worse when i'm laying on my tummy or sitting a certain way. I have taken like 5 pregnancy tests 2 when i was 3 days late 1 when i was a week late, and 1 just today. They all come out negative. As the days go on i still have no period and my nausea gets worse. Today i got some spotting only it was like a light brown type color... not what i normally get. I don't know what is going one. Anything anyone has to say would help.. similar stories.. advise..answers.. I just want to know. if im not pregnant.. then where is my period??