No AF and negative digital readings so far. Advice please?!?!?!

So today was supposto be day 1 of my period, nothing thus far. Tested with a FRER digital this morning and got a No - and then tonight I took a Clearblue digital ( I meant to get the advanced week detector but ACCIDENTALLY just got the normal one that says pregnant or not pregnant) and it gave me a negative as well. Anyone had any success actually BEING pregnant even though a digital is reading negative and you have technically missed your period?