Anyone experienced the hook effect?

My tests are getting lighter at from 18dpo to 22dpo. (Testing every 2 days). I’m praying it’s the hook but after a recent loss I don’t think it’s going to end well. Anyone had the hook effect at this stage?

Edit to say Hcg bloods are not available here. I took a digital weeks and it still says 3+ (I first got it at 20dpo) and a less sensitive test still have a dye stealer. Any chance the frer is just so sensitive it’s experiencing the hook effect before other tests? Clutching at straws.

Update: for anyone reading this in the future it was the hook effect. I tested again, one with 100% urine and one 20% urine 80% water and the diluted one brought back my dye stealer whereas the non-diluted one was equal lines. I think first response of just so sensitive that it produces the hook effect sooner than you would think.