Help?! Anyone have any advice ?

Ai

So I’m now 8 days late for AF, I keep getting negative tests. My cycle is normally spot on and I never have a late period. I’m starting to think maybe this month i ovulated late so still too early to test or I didn’t ovulate at all ( had fertility problems a few years back and I didn’t ovulate for 2 years) anyway I’m just looking for some advice and if anyone has ever had a bfp so late after ovulation ? Thank you x