Tesco pregnancy tests advice

Has anyone here had any problems with the Tesco own brand pregnancy test's or freedom pregnancy test strips? I got both today and the Tesco ones have a vvvvvfl(blue dye) and the freedom one was neg(pink dye). Has anyone else had a vvvfl, or possible evap on a blue dye and a neg with a pink dye? idk if it's maybe just a dud test or I'm prego.. I'm 10dpo today also🤷🏼‍♀️😑