Late period due to sickness?

Olivia

Has anyone experienced this...

I was scheduled to ovulate October 23/24. On the 21st I came down with a really bad virus (cough, fever) that's lasted almost 2 weeks. I was due to get my period today and nothing. I tested yesterday and today and got BFN twice but there's no sign of AF. Could my period be delayed due to the fact that I've been really sick for 2 weeks?