Am I pregnant?

Lydia

I usually get my period on the 18th of every month, like clockwork. It’s now the 22nd and still nothing. Ive had mild cramps, headaches, a vomity feeling that comes and goes, and white discharge. However, I’ve taken a pregnancy test every morning since my missed period, and they’ve all been negative. Is it still possible that I’m pregnant and just testing too early?