Pregnant??!

Freaking out because I'm 6 days late and my periods are regular. I've been off BC for about 9 months now. I had sex with my boyfriend last month when, according to eve, I was ovulating. I've been crazy moody, super nauseous, itchy boobs, had a slight yeast infection, and I've been super horny (when I'm not feeling nauseous lol). I took a pregnancy test today and it said negative. I thought I was in the clear but I talked to my friend and she made me feel as if I should still be worried. What do you guys think? Did I take the test too early?