WORRIED!! Day 4 Late & Light Poking feeling on Pelvis (bottom left)

Hello I'm on my 4th Late day! I have this poking sensation on the bottom left area of my pelvis. Been seeing a bit of mucus some girl here told me that - that is the aunt flow but now I'm on my 4th day being late, idk if its bc I'm thinking so much about a baby, i even keep dreaming with a little girl which I know will be my future baby. I have taken tests and they said negative, a friend says sometimes HCG takes longer to show in some women. What do you think??