: At least 2 days, and would have conceived on the 5th of August which would make me like 16 days at this point.
i tested negative with a first response(the ones you can take 4 days before your period is due) when i was 3 or 4 days late. i even used first morning urine. it's just me but i don't trust those things. he he. eventually i tested positive at planned parenthood when i was 5 weeks and 3 days. good luck!!