Rainbow baby 🤞🏼 line progression to dye stealer!

I had a miscarriage last month and fell pregnant straight away before my period had a chance to return. I hope this is our little rainbow baby. My HCG was 164 (assuming around 14dpo. I am going for a repeat test in a few days to make sure it's still increasing. I've been testing every two days to watch my like progress and got my first ever dye stealer today around 16dpo but impossible to tell as I don't know when I ovulated and have no period to go off.