So i took a pregnancy test - the first response brand - and i peed on the stick and nothing went through, then like 10 mins later it started showing the pee passing through the screen ( like the test how it would normally work ) and it was going super super slow - it had a faint line ( which pretty sure the faint line was there before even peeing on it ) but would the test be considered invalid because it literally took 10 mins to start working?

My period is supposed to start on Friday.