nervous

So tomorrow my AF is supposed to come I'm a little bit nervous I don't want it to come lol 😛 my husband and i have been ttc for now 2 years and nothing has happen yet however on the 22 i had some spotting it was a light period when that happen I was like "dam it's here " so I put a pad normally and went to bed the next day when I went to the bathroom I wiped and it look like light brown but it was only noticeable when I would wiped my pad was fully clean didn't have Any AF stain just clean so I went to look it up what it was happening to me and it was implantation bleeding when I read that I did get excited 😊 it was a new hope for me :,) a baby is what I want in my home 🏡 so tomorrow is my due day for AF and if she doesn't show up when should I test with my BFP ?