Am I out this month??

Tiffany • Mommy of 1, Going for #2!
I know that it's super early to test but I was just curious. I'm 7DPO and when I tested a slight line came up while the urine was making it's way through the test but when I came back after 3-4 minutes it was completely gone. Just curious if it could mean something or is it just the test doing it's thing?? Thanks ladies..