Question? Missed period other than being pregnant?

Jasmine

I have been TTC but i havent been proper trying. I knew i ovulated 22nd,23rd and 24th some where in there.. BD 22nd and 24th.

but i had a bug 27th to 29th...

I was due my period today and havent turned up. Would being ill make me late?? Or is it a good chance i could be pregnant?