No cycle, no cramps no nothing

So my cycle was suppose to show as of the 5th of this month, still nothing a few days ago I had very mild to dull pains down below that lasted for like half a day than nothing, so I figured my cycle was gonna show l, it didn't so I took a pregancy test yesterday and it was a bfn...now I'm questioning myself am I pregnant or just super late, I rarely skipped my periods so this would be a first it didn't show on time, my question is should I give it til the ending of the week or what, I could've swore today I saw a small spotting of blood on the tissue earlier today but than when I went to the rest room again nothing...can someone give me some kinda advice has this ever happened a delayed period? When you know it's knowing to come on time