AF late....when to test?

Steph • UK 🇬🇧 - Married to my wonderful husband for 4 years. Trying for our first 👶🏻 🤰🏼

So I was due AF yesterday, still not here today, 🤞🏻👶🏻 I really want to do a test but I'm so nervous in case it's a BFN, is one day late too early to test? Xx