Test line at 5 weeks + 2 days has gone so faint - help sought

[IVFpregnancy1985]

I had a frozen embryo transfer 18 days ago and my testing day was last Sunday when I had a positive Clearblue pregnancy test. I have 3 miscarriages so vet the past 18 months so I have been testing every other day - and today (when I should’ve 5 weeks + 2 days) my testing line is so faint / the lightest it has been! Should I assume that I am losing it with my testing line having gone so pale? And yes I used my first pee of the morning, same brands used etc.

please can anyone help with any of their own experiences?

Clear blue are not the most reliable brand to test but even at the same time of day the amount you drink etc can all affect it. Will you be having a blood test with your doctor? Try not to panic not all pregnancies are an exact science x

Thank you. But my clinic doesn’t do blood tests, and just with my history and it looks like my hcg has dropped off a cliff even since yesterday but particularly a few days ago when I was getting really strong lines. I suppose I’m just looking to see if anyone has had any similar experiences

They aren't comparable as 2 different tests unfortunately.

CB also not great IMO

Might be the hook effect. Try diluting your wee with water and it comes back normal. Obviously it could be bad news but if you were getting very strong lines I would Google the hook effect.