16 DPO

This test was from yesterday (taken within 10 minutes) and I swear in person I could see a VERY faint line but in pictures it's hard to see. I'm waiting til 18 DPO to test again. But AF is 3 days late now and pretty regular and ALWAYS starts when I wake up. Today I have had a lot of discharge and tried googling it but it seems like pregnancy discharge is lotion like; but mine is watery with a milk colored tint. Could this be early pregnancy discharge!? I could always add a picture of it but it makes me feel odd lol