9 days late, no signs of AF. Help please!

Nickey
I just can't figure this out. I'm 9 days late, tested at 7 days late and got a BFN. Don't have AF symptoms but slight cramps for about 1 1/2 weeks but no AF coming. Also, unless I'm imagining it, I've been having some nipple twitches and also seem to be more hungry the usual? I don't know what to do/think.. Has anyone ever been pregnant and had the same thing happen to them before getting BFP? I just wanna either get AF or my BFP.