I am 24 and I am 2 weeks late, and normally I am only a day or two if that. I am still getting really bad period pains but nothing.... Every now and then I get very light headed and dizzy a couple days ago I was very sick with vomiting. I have taken 2 tests and they both said negative. I have had 2 miscarriages 2 years ago, if that makes a difference... What is going on?