Please don't lose hope Emma I tested 6/7 Dpo with ics and got nothing then at 9dpo tested with evening pee with a FRER then a 2nd faint line appeared then did another and another etc then gradually got darker, you probs ovulated a little later I know my OPK was positive on December 8th but we DTD december 10th and caught the eggy, or could be implantation later too but also don't forget your still quiet early, the day I had my faint BFP on frer my bloods were 18 as had them checked the next day so literally I musg of just implanted, if it wasn't for MIL saying are you pregnant? And me laughing saying no I can't be im not even late yet and only DTD once (didn't tell her that bit lol) but it happened ive got everything crossed for you hun good luck xxx