What's going on? Help! Advice?

So by this app I'm 6 days late and by my other app I'm 2 days late. 2 digital clear blue tests both gave a negative result. Could I be pregnant and it not registering yet? Or is af just playing a cruel trick on me? No pre period symptoms have shown up yet (sore boobs mood swings cramping) none of that has shown up yet to let me know I'm about to start. I swear I am pregnant but no positive sign yet.