Ok so I've seen a number of mentions about blue dye.. pink dye.. FRER.. etc.
Is one dye better than another? Is FRER a blanket term to the "5 days sooner" type tests or is it a brand? I bought the Clear Blue Easy (I think?) brand and so far have gotten BFN.. it's blue dye and a "5 days sooner" type. Should I try this FRER?
Just looking to understand terminology a little better.
ETA - When people mention the HPTs and that they took it with a "4 hour hold", what does that mean? That they held their tinkle for 4 hours? What difference does that make?