My first period came 2 days after I stopped the pill. I didn't actually wait until I'd finished the pill - probably similar to you - about 1 week before the sugar pills - but it came on 2 days after.

The next period was 27 days, then 44 days. Who knows what my next one will be. I kinda think my body might be a bit stuffed up!

I'm not expert, but speaking from experience - sometimes my period would take about 3 days to come on when I was on the pill - so you might be just around the corner. If it's beyond that - maybe test?