Beyond confused 😭😭😭

At the beginning of the week I took a CB test and ended up with a very faint line, decided to do a Tesco Digital test last night and I got my BFP, I couldn’t believe it over the moon, this morning I wanted to relive that happy stage all over again- first wee of the day BFN 😭😭

Has anyone else had this with Tesco digitals or any similar stories or advice? Please and thank you 💕💕💕