I am 16 years old. Every weekend my ex boyfriend came to the house until this weekend. Every chance we got we had sex. Unprotected in every way. I have morning sickness. I have tender breast. I am constantly having a headache everyday. I am lightheaded. My period was 4 days late. He still tells me I'm not pregnant. I think I am. His coworker bought me two home pregnancy test. One positive. One negative. That night I started having lower back pain. I have kidney problems I though it was that. His coworker told me it wasn't. I have had cramps but no period.... Could I be pregnant??