Missed periods

[BrightStar07]

I am currently TTC and think I might be pregnant. My period in November was two days late, it normally arrives on a Thursday but came on a Saturday. I was just wondering should I have expected my period this month to come on the Thursday or the Saturday. It's the following Saturday now and still no period. Does this mean I am a week late or 9 days??

Hope this makes sense?? Xx