Can a pregnancy test be positive before implantation

Chloe

Let me explain I got a vvvfl at 7dpo then it got progressively darker until at 12 dpo I got a BFP! Yay. My period was supposed to start today I have 32 day cycles.

No period or sign of period I feel very pregnant. I actually took a test because I was throwing up and dizzy (like with my last two) at what would have been only 7dpo I was already having vomiting.

my question is how did I get a positive result so quickly if baby doesn’t implant until 4 weeks? That’s what my “what to expect app” is telling me that baby won’t implant until tomorrow when I am officially 4 weeks.

I track everything so I know I don’t have my dates mixed up.

Can a home pregnancy test show positive before the baby implants and starts producing HGC ?