So confused - conflicting results!

So I tested out my trigger from 6dpo & got a negative digital on Tuesday. Yesterday boobs super sore so I tested again with a vvfl on FRER and positive digital on clearblue (10DPO). So today (11dpo) clearblue digital says pregnant, vvfl on FRER but FRER digital says no. I thought clearblue needed the most hcg (50) to detect, so why would the other digital be no… I’m thinking it’s a chemical as line isn’t darker today either (I always have clear line progression) This will be my 7th loss if it is…🥺