FRER indent or positive

[ARVG1986]

I did a test yesterday at 9dpo it was a frer and it was faint line couldnt get it on a pic, I did another this morning line came up abit darker and got it on a pic how bad are they for indent lines?

I'm not sure how to add pictures I've just joined x

I think if they are left to dry they are bad, but did it come up straight away? Sounds promising if it's darker today. I think you have to wait a while before you can add photos after joining!