Am I Pregnant?

My Last Period Start Date Was December 22nd. I’ve Had Unprotected Sex December 28th- December 31st. My Period Is 4 Days Late. I Took A Pregnancy Test @ Night It Was Negative. But I’ve Been Cramping, Felling Nausea, My Breast Are A Little Sore & I Feel Tired. Should I Go To The Doctor, Take Another Test Or Just Wait?