Lines not getting darker


Hi everyone. I got my first very faint positive 6 days ago on the day AF was due. You can barely see it in the picture it was that faint. I have been testing regularly since, and there has been one obvious line progression then it seems to have stayed the same. Has anyone had this and then had a positive outcome? I’m sick with worry as I had a very dark positive with my last 2 pregnancies 5 days before my period was even due! My last 2 were girls so maybe this is a boy and that’s why it’s different? I think I’m just clutching at straws but any advice would be greatly appreciated x