When did you get your bfp for first pregnancy?

I’ve never been pregnant and only recently started tracking and trying. I had a positive opk and am now 17 dpo and have been spotting brown for 3 days which is new for me. Still having negative tests each morning (even using early pregnancy detection tests). Online says wait till 1 week after missed period (I’m currently 3 days late). Curious about when other ladies received their positive.