Has this ever happened to anyone else?

Abi • My husband and I have been together for 6 amazing years and together we created two gorgeous girls who are our entire world. We also have 4 angels. Now we are actively ttc #3👣👶❤
I got my first vf positive a few days ago so Ive been testing daily since, the problem is that when I use fmu I get a bfn but when I use urine from the afternoon or evening I get a faint positive again. Its very confusing, frustrating and emotionally taunting. I've had 4 losses 2 of them recent so I really hope it's not another one :(