Please help!

Al

These are my tests 9-13dpo. I’m freaking out today because it looks like there’s no progression between my 12 and 13 tests. Is it normal to have a few days where the tests look the same? I’ve been asking my doctor for bloodwork and he isn’t returning my calls. I know they say that the darkness of the line doesn’t matter, but that hasn’t been the case in my experience.