False bfp or chemical?

Abi

Hi I got a clear bfp this morning on one type of test only. I then retook with strong (3 hour hold no water) wee with same brand and bfn 😔

False positive or maybe it’s just not sticking from this morning?

Thoughts? Will test again in the morning but feeling like it should at least be as visible this afternoon but nothing and bfn on one step cheapies x

Thanks