Anyone die af on 15 and still getting bfns?

Hey ladies thought id start a new thread anyone due on the 15th but testest already like me! And got a bfn 11dpo and 15 and 16 DPO ! Periods are around 33 days well my last one was so abit confused as to if it's already gone as I had a laparoscopy a week ago this Monday just gone so I don't know if af took over from bleeding from op! Anyone want to go insane with me