Help with dates?

Hi'ya ladies,

My last period was 5-11 April 2020. On 27th April 2020 i got my first BFP. Could anyone tell me roughly when implantation would have occured or when the BD finally led to this pregnancy? I have 0 idea as we weren't <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> 🤦🏻‍♀️ i have an EDD of 8 January 2021.