What Causes Abdominal Pain, Headaches And Vaginal Discharge?

lately ive been having sharp pains in my lower abodomen to the point that I havd to cuel in a ball, major headaches especially when I sam standing, ive been really tired all the time even when I get enough sleep, and I have vaginal discharge that is more than usual. Im not sure if im pregnant because I was once before and didnt have all these symptoms only,the discharge. Is there something wrong qith me?