still negative!

I'm 5 days late and the last time that's happened was over 2 and a half years ago when I was on birth control to stop my periods. I know I'm pregnant but I'm still waiting for the positive. We are so excited and really want to announce it. I have zero patience for this news. We've been trying for SO long. What do I do to get the positive? Or does planned parenthood or clinics do blood tests?