just some advice

Hey all i'm all new at this ttc thing and just need some advice,
My partner and i had sex on my most fertile days the 13th and 14th of this month well yesterday the 28th of January i was ment to get the witch but she never came did a test but it was BFN and now its day 2 without the witch,
When would be the best time to do another test and my periods are always on time

Well you could have ovulated later. I say test every other day or until AF arrives. Good luck and lots of baby dust.