Frer Progression 8dp5dt - worried line is not darkening enough

Me

Ladies,

These are my progression from 5dp5dt to 8dp5dt (left to right). Today’s test looks like the same strength of a line than 2 days ago. I am worried I am heading for another chemical.

Can you post your Frer’s with corresponding hcg betas?

My beta is Friday at 10dp5dt or 15 dpo.

Thank you.