Too soon to test??

I was supposed to start my period on 11/16 but it hasn't started yet. I haven't had the normal signs that I get when I'm about to start. My youngest child is 8 years old now so it's been a while since I've been pregnant, do u think it's too soon to test? Should I wait a couple more days? My normal cycle only lasts 3-4 days so technically today or tomorrow would be that last day of my period had I started on time.