Has anyone ever been late by at least 4 days and got bfn's then a bfp? I've been using Fairhaven Health BFP pregnancy test strips and got a negative. I am always every 28-29 days, haven't been stressed and no change in routine. I'm just a bit confused. I have been having some cramps so keep thinking AF is coming and she doesn't. Also been (TMI) having some quick random sparse shooting pains like up in my vagina. I see all these ladies getting BFPs at like 9DPO so I'm thinking I'm out. Anyone been there before?