Not sure if it's too soon.

Hey ladies, so I'm only about 5-7dpo but I've been feeling like somethings up. My breast have been sore and growing a lot. This morning I woke up and got sick so I was extremely anxious to test. At first I thought I saw a faint positive but now I think it just looks like a BFN. I'm hoping it's just too soon. What do you guys think? Can you see anything? Tweak anyone??