Need answers

Brittani • Im 23 years old and im trying to have a baby i misscarried last year and was heartbroken i wanna start a family with my fiance

I am currently 12 dpo and have two days till AF arrives I'm nervous I'm hoping this months the month if AF doesn't show up in two days when should I take a test the day after the day I miss or wait awhile?

I've also had sore boobs and the way certain foods taste taste all metalic to me am I bugging?