So I took a frer test at 11dpo in the afternoon and it came back with a v v v faint positive but the line although very faint was instantly there... since then I've taken numerous other tests none frer tho as I only had one of those and all the other test have been BFN 
Anyone have a false positive from a frer before? I'm 13dpo today and another BFN on an Asda test.