14DPO testing > advice please ladies

LM :)
I need some advice please ladies :)
I’m on CD32 today, 14DPO (the longest cycle I have ever had so far, usually 29 day cycles) and still no sign of AF.
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I’ve taken 3 Wondfo hpt, but they are all Negative :(
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I usually get severe AF cramps a day or two before AF starts, I always know when it’s time. But the last couple of days I’ve had a weird different kind of cramping, almost more like Ovulation cramps.
Might the Wondfo’s be wrong? I have a clearblue, but don’t want to waste it as i’m already on 14DPO and sure the wondfo’s would’ve picked it up by now if im Prego?
Has anyone ever gotten BFN's, and only a BFP after 14DPO?
I might just be holding on to hope here, so badly want a BFP – TTC for 1yr.