Evap line or BFP

So I am just 6 dpo and I took the Walmart pregnancy test today morning. At first, nothing happened but after a couple of minutes (around 5 to 10 mins) I saw a line. I had super mixed emotions because the cover says any result after 10 mins is invalid. My question is has this happened to anyone and do you think this is a BFP or an evap line. I love these Walmart pregnancy strips but I’m uncertain about its sensitivity so early during the tww. What do you ladies think ?