aaaaaahhh this is soooo exciting , you are probably still sleeping but i really really hope you get a bfp when you wake up. you deserve it after all that you have been through. i don't know much about the diff brands of hpt but sounds like FR is less responsive which could explain the bfn.
i hope with all my heart that you get a bfp, let us know fjl, we are all here rooting for you :happyda nce: