Missed period

Hi! I missed my period this past week and I’ve been really nervous about pregnancy and whatnot. I have had a death in my family this past week too which has caused me a lot of stress. I missed my pill one day but made sure to take it that night and I had unprotected sex. Could I have missed it due to stress? Should I take a test? I’m just pretty nervous and stressing over this which of course, wouldn’t help my period come.