When to expect BFP?

Abigail

GoodMorning everyone!!! On 9dpo I started spotting which never happens it was a rusty brown color like implantation bleeding and stopped yesterday.. today I am 11dpo period is suppose to start in 3 days! Has anyone experienced implantation bleeding on 9dpo? If so when would I get a BFP?? Hoping I am pregnant this cycle but trying not to get my hopes up.😞