Missed period.

Austin • 22 😝 mommy to Camryn & Kanyon & Easton👶 💋-12-15-15-💋-08-28-17-💋 -06-30-18-💋
So I was wondering if any of you ladies went through. I am 8 days late on my period and I have taken 4 pregnancy tests and they are all negative.. I freaked myself out reading about what it could be since the tests are saying I'm not pregnant.. Is it normal to miss your period by 8+ days because it's really freaking me out