Line too faint - possible chemical?

[sophynm]

after an early loss caused by a blighted ovum earlier this year, I’m terrified of another loss. Concerned that the line on the test strip is too light for 14dpo. It was darker on the POAS test which I took at the same time, so a bit odd to see such a difference.
thoughts? The numbers represent DPO.

All test brands come up slightly different, you can't really compare them. My strip tests were roughly the same, quite faint until 18dpo or so. Obviously no one can say this is definately not a chemical but your pictures don't indicate that to me.