6 days late negative test

Alyssa

My periods are usually like clockwork, some months I may be a day or 2 early or late, but I usually average around a 30 day cycle. I am now 6 days late, took a test this morning and it came out negative. Like no question about it negative. I'm at a loss and don't know what to do or what to think. I dont track my ovulation and I was sick twice this month, but even in the past it has not made my period this late. I'm also not having my normal PMS symptoms. Any thoughts?