When should I take a pregnancy test?

Valerie
I should have started my period Friday (4 days ago). I took a pregnancy test on Friday and it was negative then I took a digital one on Sunday and it was negative as well. I still haven't started it but I honestly hate the dissappointment everytime I get a negative. Should I just assume I am just late and stop thinking about it or take another one? I felt like I had some other symptoms of early pregnancy like cramps, weirdly emotional, etc but who knows maybe that's just associated with the period to come. :(