How long time after receiving my first bfp should I retest for confirmation?


I finally got my bfp using FRER! Tested 3 days ago and got a bfn... So I'm super elated... However.... I'm also kinda skeptical (naturally a pessimist). I have to pee again now after downing half a bottle of water... But I'm afraid maybe it's too soon to retest? Maybe the water I just drank can dilute the pregnancy hormone or something... I really don't know...

So should I just go to the bathroom, not test but just use my fmu for the retest or could I do it now and the water I've had not matter?

Hopefully this makes sense... My brain is kinda all over the place since seeing the bfp.