So I got pregnant in August 2019.

Cycle length: 29 days

Last period: 7/27/19-7/30/19

Expected ovulation on app: 8/12/19

Actual Ovulation: 8/13/19

Date of sex: 8/4/19 & 8/10/19

Date of implantation bleeding: 8/20/19

Date of BFP: 8/22/19

My doctor said I conceived 8/10 which didn’t match up with my test.

My question is

Where the opk test wrong about my peak?

And if not where my hcg test a little dark for 9dpo?

So sorry if this is confusing

8/22 Yellow due to Azo medication

9DPO. Do they seem a little dark?