How long after suspected implantation did you get your bfp???

Just wondering :) Im still waiting on mine. Took an frer today with what i think could maybe possobly sorta kinda be a very very very faint line.... But idk. I have kinda irregular cycles but if i ovulated when i think i did (apr 18th) i think i had IB at 7dpo. So now im 10dpo i think and its a waiting game. So frustrating!!

(note: my hcg levels are always less than 2 so the doubling rate takes a while i guess)