Going off pill after 20+ years

Lisa
Hi! New to this - turned 41 this week and getting married in Nov. we've only been trying for about six weeks. I stopped the pill in mid-August, immediately had a seven day period which ended Aug 22 and should have started Sep 16th but nothing. I took a pregnancy test but it was negative. Really worried that my period hasn't started yet. But is this normal after coming off the pill after so many years?