Late period due to illness?

So, my period was a whole week late, which concerned me. It's never been that late before... I did some reading about what could cause that, and found that being sick during the time you are supposed to be ovulating can cause that, and it would explain it perfectly! I came down with something awful during those few days, ran a fever of nearly 102, and stayed in bed for about 3 and a half days, during what should have been my most fertile time. (Talk about ruining the weekend!)

Has anyone else experienced this?