What to do

I had unprotected sex a week ago. He finished inside twice. I was supposed to start my period a couple days ago but I’m about 4 days late now. I took a test when I was 2 days late and it was negative, but my period still hasn’t started. Should I keep taking tests? Just assume it’s a weird period? The only thing that had me slightly concern was that there was extremely light pink bleeding, but it was super light and didn’t last very long either. Much different than my normal period. Opinions?