BFN and 4 days late

So my AF was supposed to come on Wednesday and on CD 12 is when I got the solid smiley on clearblue and husband and I BDed like there's no tomorrow throughout my entire fertile days. I've gotten all bfn and I'm just wondering if I should just wait for AF to show and lose hope or what. Advice pleaseee. If AF does show just means we have another month to try but if it doesn't I'd be ecstatic! Of course lol☺️