Help!

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I've been feeling nauseous for 4 days! Especially when I wake up, I also feel hungry at the same time. I will eat something and still feel hungry after, but also feel nauseous. I took a 2 hr nap today and rarely take naps, woke up feeling more nauseous. It's 6 days before period. Could this be early preg symptoms? Everything I've read says it's too early to have symptoms my cycle is 28-31 days, lasting approximately 7 days. Has this happened to anyone? Did you get a bfp? What else could it be? Thank you for your comments!