Help Please..

18-19 dpo... 4 days since missed period... And negative tests. Taking a digital in the morning. And if that's negative as well, then I'm making a doctors appointment Monday morning. My breasts are EXTREMELY sore. They hurt so bad to the point, I can barely sleep on my front side. And I've been nauseous and vomiting the past couple days.. Idk what's wrong with me.. ): Please don't ignore. Someone give me advice..