4 weeks late and still no BFP...why?!!

LiLi0916

Still not signs of period, I’m having headaches everyday, nauseous every morning and through the day, pressure in lower abdomen and no signs of period coming. I’m getting zapping pains in my breasts and they are heavy and larger than usual. Has anyone ever tested negative this late but ended up being pregnant? I think I am pregnant because I have never been this late. What should I do?!