So late

Cathy
So today is day 8 and still no sign of a period. Not sure what to take by this seeing how I've been regular always and on time. I did take a test 4 days ago it was negitive, but I was just 3 days late. So I really don't want to get my hopes to high, I've been tring for 10 years. Oh lord I pray to you in Jesues name to bless me and my husband. So when should I test again or just see this as a extremely late period?