Could I be pregnant or am I freaking out?

Ok so I was supposed to ovulate on the 4th and usually I don’t have any mucus really but on the 5th I had egg white mucus which they say comes ON your ovulation day or the days before it. I had unprotected sex on the 7th and I’m feeling really out of whack. Usually I can tell when my period is coming and I don’t feel it. I feel nauseous but not throwing up and usually I’m bitchy right before my period, I’ve been so calm leading up to it. I have tested twice and got negative(not using fmu) is it possible that I ovulated late,and I’m in fact pregnant and testing too early?