Brown spotting after BFP

Just wondering if anyone could put my mind at rest please, I have done tests the last 3 days, results below. Test with 1

Dark brown spotting day of BFP

Bleeding after BFP?! 😢: Girlsas you - Fertility Network UK

8dp5dt fet - Brown spotting after bfp getting darker

Brown discharge after BFP TMI picture

Did anyone get what they thought was a period before BFP? : r/pregnant

Brown discharge

BFP but dark brown discharge???

Light brown discharge after BFP - Fertility Network UK

Implantation bleeding and BFP!!! (TMI pic included)