Is this good?

Hi there,

These are my tests (all fmu) , from left to right:

13 dpo 15/11

14 dpo 16/11

15 dpo 17/11

16 dpo 18/11

I'm a bit worried because they don't seem to get a lot darker.

I guess they are a bit darker because I have put them in order without watching but the difference in the last 3 is so small.. I'm a bit concerned.

I'm out of tests and I'm only going in for a hcg blood check on friday...